Insatiable demand for cannabis has created a giant carbon footprint

From Phys Org

by Colorado State University

Insatiable demand for cannabis has created a giant carbon footprint
The life cycle greenhouse gas emissions from indoor cannabis cultivation modeled across the U.S. Credit: Hailey Summers/Colorado State University

It’s no secret that the United States’ $13 billion cannabis industry is big business. Less obvious to many is the environmental toll this booming business is taking, in the form of greenhouse gas emissions from commercial, mostly indoor production.

A new study by Colorado State University researchers provides the most detailed accounting to date of the industry’s carbon footprint, a sum around which there is only limited understanding. What is clear, though, is that consumer demand for cannabis is insatiable and shows no signs of stopping as more states sign on to legalization.

The study, published in Nature Sustainability, was led by graduate student Hailey Summers, whose advisor, Jason Quinn, is an associate professor in the Department of Mechanical Engineering. Summers, Quinn and Evan Sproul, a research scientist in mechanical engineering, performed a life-cycle assessment of indoor cannabis operations across the U.S., analyzing the energy and materials required to grow the product, and tallying corresponding greenhouse gas emissions.

They found that greenhouse gas emissions from cannabis production are largely attributed to electricity production and natural gas consumption from indoor environmental controls, high-intensity grow lights, and supplies of carbon dioxide for accelerated plant growth.

“We knew the emissions were going to be large, but because they hadn’t been fully quantified previously, we identified this as a big research opportunity space,” Summers said. “We just wanted to run with it.”

The CSU group’s efforts update previous work by Lawrence Berkeley National Laboratory researchers, which quantified small-scale grow operations in California and predated the cascade of state-by-state legalization since Colorado was first to legalize in 2012. To date, 36 states have legalized medical use of cannabis, and 15 have legalized recreational use.

Read the full article here

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March 10, 2021 6:06 am

I wonder how it compares with the BitCoin mining energy use and carbon footprint. (A lot of that has moved to server farms close to remote hydropower, I believe.)

Reply to  Ric Werme
March 10, 2021 6:53 am

My thought exactly

Reply to  ResourceGuy
March 10, 2021 7:54 am

Now we know what ‘greenies’ are smoking.

Reply to  Vuk
March 10, 2021 12:27 pm

can’t wait to see them trying to sell “carbon-free” hash, like the carbon-free sugar.

Robert W Turner
Reply to  Greg
March 10, 2021 1:39 pm

That’s actually a brilliant marketing strategy for these half-baked mooks.

Reply to  Ric Werme
March 10, 2021 3:33 pm

And what about the beer, wine and other alcohol products, including transportation.
Do they have a carbon free version.

Alex Cruickshank
Reply to  Ozonebust
March 10, 2021 5:56 pm

Discounting transportation, which is common the both, the nett CO2 production of Cannabis is high due to the electricity use and the CO2 forcing.

That said, given the current state of the USA, Cannabis smoking may be an essential mental health medicine!

March 10, 2021 6:14 am

This should be a fun thread to come back to in an hour or two and read the comments.

See ya,

Ron Long
Reply to  Bob Tisdale
March 10, 2021 6:43 am

Hey Bob, why you are waiting for the insanity to build up, check out the recent comments by Tommy Chong, shirley one of the experts on the topic.

Monna Manhas
Reply to  Ron Long
March 10, 2021 1:26 pm

“Don’t call me Shirley!” 😉

Last edited 1 year ago by Mary Jones
March 10, 2021 6:23 am

I wonder how many people consider cannabis to be an essential business and its carbon footprint is ok? Just like John Kerry’s private jet.

Joel O'Bryan
Reply to  Alan
March 10, 2021 10:12 am

Anything can be rationalized by the Leftist mind. It is a world view of a means to an end, relative moralism justification of their eschatological world view.

Rationalizing destroying humanity to save it from itself. The sacrifices are always suppose to be someone else’s sacrifices in true John Kerry fashion.

Last edited 1 year ago by Joel O’Bryan
Reply to  Joel O'Bryan
March 10, 2021 10:35 am

Yeah, in two words, “virtue-signaling”. I was just discussing this with a colleague on the Peninsula (San Francisco that is). I live in the East Bay.

It’s fcuking hilarious. Within a 25 mile radius of where I’m typing, is the greatest capitalist machine ever in the history of the world …. Apple, FaceBook, Google, IBM, Oracle, Gilead, Genentech, and the list goes on. Is it any wonder that all these rich people have to lie harder about being socialists. Even venture CAPITALISTS are socialists around here. Truth is stranger than fiction.

Joel O'Bryan
Reply to  philincalifornia
March 10, 2021 11:27 am

We’re surrounded and enveloped by GroupThink. We have evolved as social creatures wanting to fit in.

Reply to  Joel O'Bryan
March 11, 2021 3:54 am

Fitting in is not something I have worried about, you should worry less about it yourself.

Mike Dubrasich
Reply to  philincalifornia
March 10, 2021 12:04 pm

And all those capitalist/socialist Technoids have gigantic server farms in Oregon and Washington where they suck cheap electricity from the Columbia/Bonneville system. The Bitcoin miners routinely steal their electricity by parking semis loaded with puters under power lines and jumping the juice. Power theft is the new Big Crime around here.

Reply to  Joel O'Bryan
March 10, 2021 11:26 am

Kind of like making a statement by throwing someone else’s medals over the White House fence.

Reply to  Joel O'Bryan
March 11, 2021 3:47 am

How about government just stop screwing around in what the Constitution says it should not screw around in? Want to smoke pot? Smoke pot. It is none of the governments’ business. Never was.

John Kelly
March 10, 2021 6:30 am

Just too funny. Will old Biden and Kerry put a super tax on weed? Clearly it needs it.

Eric Vieira
Reply to  John Kelly
March 10, 2021 7:31 am

They’ll get in clinch with Trudeau though… He legalized it in Canada.

Reply to  John Kelly
March 10, 2021 7:44 am

Word is he’ll put a lid on it or at least hold a joint session.

Jeff Alberts
Reply to  Scissor
March 10, 2021 10:16 am

As long as he doesn’t shotgun through a bunch of taxes.

Layor Nala
Reply to  Scissor
March 10, 2021 2:39 pm

No! Biden, Kerry, Gore and Trudeau probably smoke it – that is why they appear ‘dopey’ all the time

Reply to  Layor Nala
March 10, 2021 3:05 pm

A lid is one ounce of marijuana, enough to make 5 good sized joints.

Tired Old Nurse
March 10, 2021 6:33 am

But it’s organic!

Reply to  Tired Old Nurse
March 10, 2021 8:11 am

Not even close. That stuff is heavily fertilized and pesticided up until the last week or two. It’s how they get six pounds from a single plant. Some of them are big enough to be Christmas trees.

Bill Parsons
Reply to  Felix
March 10, 2021 7:27 pm

You don’t understand organic. If it’s organic that means it’s raised on the emerald green extract of distilled hubris. It’s kind of a green fume.

Robert W Turner
Reply to  Tired Old Nurse
March 10, 2021 1:42 pm

They didn’t even consider the CO2 emissions from burning it, or the fossil fuels used to extract the THC oil.

Lawrence E Todd
March 10, 2021 6:33 am

In every life we have some trouble
But when you worry you make it double
Don’t worry, be happy
Don’t worry, be happy now

March 10, 2021 6:37 am

We Cannabis folks are always happy to contribute to Global Greening, both directly and indirectly.

March 10, 2021 6:37 am

Access seems to be blocked to the whole article. Anyone else having a problem?


Reply to  tonyb
March 10, 2021 7:27 am

Looking at the page source, the a href= link encloses a whole paragraph but no link address. It may be supposed to be this (which is at the top of this article):

The Colorado State site linked doesn’t show a press release or a study.

The actual paper is behind a pay-wall:

Edited to add link to paper.

Last edited 1 year ago by OK S.
Reply to  tonyb
March 10, 2021 7:33 am

comment image

Reply to  OK S.
March 10, 2021 8:17 am

Bill? Bill Gates?

Tom Abbott
Reply to  Anti_griff
March 10, 2021 5:21 pm

No, that’s Pete our new transportation secretary.

Cheech Marin
Reply to  tonyb
March 10, 2021 10:35 am

Lay off the weed, try later.

Tom Abbott
Reply to  Cheech Marin
March 10, 2021 5:25 pm

Cheech, love your movies!

Alan Robertson
March 10, 2021 6:41 am

I knew young kids just out of high school, who did hard time in Big Mac, back in the early 70s, for pot possession.
Now, since the state gov’t has figured out how to get a piece of the action, there’s a “medical marijuana” store on almost every commercial corner, in OKC, hundreds of ’em.

Joseph Zorzin
Reply to  Alan Robertson
March 10, 2021 8:29 am

Right in the middle of the small town of Athol, MA- on the Main St. right across from the post office is a pot store. I took the picture with a 360 degree camera- me on sidewalk, enjoying the irony.

pot shop and post office.jpg
Last edited 1 year ago by Joseph Zorzin
March 10, 2021 6:43 am

It isn’t a given that indoor farming uses more energy.

Indoor vertical farms can produce high quality and virus-free products that can be locally distributed, inside the urban environment that such investments take place, saving annually millions of tons CO2 emissions.


Lighting is the big energy use that indoor farming has and that outdoor farming doesn’t need. On the other hand, I would say that outdoor farming uses much more energy for everything else.

Al Miller
Reply to  commieBob
March 10, 2021 6:48 am

I think the point is that since this crop is (arguably to some I’m sure) not a necessity the comparison is not growing it at all.

Reply to  Al Miller
March 10, 2021 8:10 am

There is the question of what we actually need.

Suppose that Joe needs a pacemaker. The infrastructure that enables the technology to build and implant the pacemaker also enables the creation of frivolous products.

You could argue that we don’t need 9/10 of the products we consume. However, if we didn’t provide a market for those products, that would eliminate the market for most of the stuff needed to make Joe’s pacemaker. Could the technology for Joe’s pacemaker be sustained just on the market for pacemakers? Probably not.

In other words, when you eliminate luxuries you also eliminate necessities. The Marxists don’t understand that.

Reply to  commieBob
March 10, 2021 8:37 am

My favorite example was shutting down freeway rest stops and especially restaurants at truck stops as non-essential, at the same time they were calling truckers essential workers and relaxing their required rest rules.

Economies are so intertwined that you cannot pick certain segments as non-essential. What if Joe Trucker likes to unwind by watching billionaires pay big millionaires to run into each other, or by keeping up with the Kardashians?

Reply to  Felix
March 10, 2021 5:59 pm

Drove across the US and back from early June to late July this summer. I was sure glad I was pulling my porta potty (5th wheel) behind us. Otherwise the wife and I would have been pissin on the side of the road with all the closed rest stops.

Rest stop, 5 miles ahead. good
Rest stop 1 mile ahead. Great.
Rest stop 1/2 mile. It’s about time.
Rest stop CLOSED. Crap! Better find an off ramp to park and open the trailer!!

We are Old, not hiding behind a mask unless made to, Never saw 1 sick person with china virus in 6 weeks of travel. We put the stupid mask on as we enter the place, and pull it off walking out the door.

Jeff Alberts
Reply to  commieBob
March 10, 2021 10:18 am

Capitalism isn’t about what you need, it’s about what you want.

Reply to  Jeff Alberts
March 10, 2021 12:26 pm

“Capitalism isn’t about what you need, it’s about what you want.”

Yes, freedom.

Robert W Turner
Reply to  Glenn
March 10, 2021 1:57 pm

That’s truly the crux of capitalism.

Reply to  Jeff Alberts
March 10, 2021 5:56 pm

And because of that, more so than any other economic form if you try sometime
You’ll find
You get what you need

Reply to  commieBob
March 10, 2021 8:15 am

Lighting has switched to LEDs, uses a lot less power, and lowered the A/C requirements too.

Reply to  Felix
March 10, 2021 9:23 am

Around 5W in general

Robert W Turner
Reply to  Krishna Gans
March 10, 2021 1:48 pm

LoL! These grow lights are not 5W bulbs that you screw into a socket. These are high output full spectrum lights up to 600W and they are on 17-20 hours per day -multi million dollar operations where the biggest expense is the lights.

I grow microgreens indoors, which only use 20W T5 LEDs and even my setup pulls about $70-$80 per month electricity at $0.08 per kWh.

Reply to  Robert W Turner
March 10, 2021 4:08 pm

LED lamps to grow indoor recreational drugs are far more expensive than those 20W T5s you use for microgreens.
At least the full spectrum LEDs are cheaper overall than the metal hydride lamps they replace.

Reply to  Felix
March 10, 2021 11:29 am

On the other hand, switching to LEDs has increased heating requirements.

Robert W Turner
Reply to  commieBob
March 10, 2021 1:55 pm

Right now indoor farming only makes sense cost wise for microgreens (which have low PAR requirements due to being harvested young) and tomatoes (because they are so efficient) – as far as food goes. For cannabis it only makes sense cost wise because it’s a ridiculously high priced crop under regulations/black market – it is still incredibly energy intensive. Its true value without regulations/black market would make it far more efficient cost wise to grow outside.

Utah State has hydroponic growing videos on Youtube with excellent info for indoor farmers/growers.

Last edited 1 year ago by Robert W Turner
Reply to  Robert W Turner
March 10, 2021 6:02 pm

Depends what you are growing it for. Too many unknowns in outdoor.

I thought about planting a nice pollinating crop next door to a big grow so they would pay me off to go away. But they went away for lack of competitiveness anyway.

Reply to  commieBob
March 10, 2021 4:03 pm

Hydroponic growing requires constant attention to the watering lines, salt contents and unfriendly flora and fauna.

Plants require constant maintenance and inspections. Not just one person wandering an easy to see field under bright sunlight.

Volatiles and aromatics coat the light sources and need periodic cleaning.

Harvesting is entirely by hand, with someone bending down to cut the stem below the branches.

Transporting to the drying rooms is entirely by hand, with someone carrying the plants to drying racks.

Drying rooms/sheds must be well ventilated to prevent molds and loss of plant quality.

Final dried product must be sorted, separated and packaged by hand.

Outdoor farming allows fields of marijuana to be easily tilled, sown and grown without extra water on less than arid land.
Harvested by combine with the stalks separated for fibers. The rest can be fed to ungulates without harm or intoxication.
All it takes is a few gallons of fossil fuels.

And you’re trying to claim that indoor farming is more efficient and uses less power than farming outdoors?
Marijuana is trouble free, has few insect predators and is easily grown and harvested in bulk.

If pretentious harvest for elite products is warranted, just as most hand harvested crops today, workers workers fill baskets that are picked up and transported mechanically.

Fussy handlers seek specialist products raised indoor, because:
A) Crop can be kept hidden, forcing police to use infrared optics to seek high power lamps.
B) Crop can be kept safe from two legged predators.
C) Indoor horticulture requires extra effort to control/exterminate aphids, scale, spider mites, whitefly, fungi, loss of air quality from poor ventilation and failure to exhaust stale expended gases.

Pamela Matlack-Klein
March 10, 2021 6:54 am

And yet the Federal Government still considers Cannabis sales to be a federal crime. How are states getting around this? It is very different in Europe.

Reply to  Pamela Matlack-Klein
March 10, 2021 7:50 am

Federal law is not enforced in many cases and this has consequences. In the area of illegal immigration for example, currently 90% of COVID cases in Tucson are illegals. Also, illegals are involved in drug distribution in so-called sanctuary cities.

Federally, cannabis in the form of hemp is now legalized via the 2019 Farm bill.

Reply to  Scissor
March 10, 2021 12:28 pm
Joseph Zorzin
Reply to  Pamela Matlack-Klein
March 10, 2021 8:37 am

The states just do it- usually after a referendum.

Reply to  Pamela Matlack-Klein
March 10, 2021 11:31 am

I remember that in Colorado, a number of banks refused to accept deposits from pot stores after Colorado legalized weed. They were worried about federal regulations.

Tom Abbott
Reply to  MarkW
March 10, 2021 5:47 pm

The banks were afraid the Federal Government might charge them with money laundering, if they allowed marijuana businesses to open bank accounts.

Reply to  Pamela Matlack-Klein
March 10, 2021 12:25 pm

The rule of law is a myth. And it’s (Federal, at least) enforcers are politically corrupted.

Robert W Turner
Reply to  Pamela Matlack-Klein
March 10, 2021 1:58 pm

States hold their middle finger up to the Feds, that’s how.

Tom Abbott
Reply to  Pamela Matlack-Klein
March 10, 2021 5:41 pm

The federal government is not enforcing the marijuana laws. They tried for a while, but there was so much controversy over it that they stopped doing it. Since that time numerous States have legallized marijuana to one degree or another, so the Feds have even less incentive to enforce the laws now.

Now that the Democrats have control of both Houses of Congress, they may just legalize marijuana nationally. They will throw it into one of their upcoming pork barrel spending bills.

The main problem marijuana sellers have had in the past is since marijuana is against federal law, no bank in the country would give the sellers a bank account, so the sellers were having to haul around large amounts of cash. Not a good idea.

I think the federal government finally passed a law shielding banks from jeopardy which will fix this situation. I don’t know if that actually took place, it was just being discussed some time ago and I lost track of it.

I noticed the other day that a large area of land next to a road a couple of miles away from here had been cleared of brush and they are putting in a large marijuana grow operation. It looks like they are going to use natural sunlight filtered through a translucent cover over the structures.

March 10, 2021 7:00 am

Dems are heavily invested in this industry from growers to retail. It is immune to critique.

Reply to  ResourceGuy
March 10, 2021 7:51 am

Don’t forget their consumption. I personally want congress, and all government workers for that matter, to submit to regular drug testing.

Reply to  Scissor
March 10, 2021 6:23 pm

And ALL those who receive unearned government benefits. Examples of earned, SS and military retirement and Medicare. Examples of not earned, anything on an EBT card.

Reply to  ResourceGuy
March 10, 2021 10:48 am

“Dems are heavily invested in this industry”

It’s a two-fer, pretend you’re in with the in-crowd (young people who don’t know what they’re up to) and, more importantly by far, it’s TAXABLE. What’s not to like.

Reply to  philincalifornia
March 10, 2021 12:31 pm

Yep. It’s just incredibly bad for the environment according to all of their metrics that they use to attack the coal that keeps their lights on or the fertilizer that keeps their plants growing.

Robert W Turner
Reply to  ResourceGuy
March 10, 2021 1:59 pm

And it’s a massive bubble too. I haven’t seen a single public pot stock that has actually turned a profit and the market is super saturated. Think,

Brent C
March 10, 2021 7:04 am

On one hand the article condemns the CO2 footprint emitted by cannabis growers. On the other they state that they use CO2 to accelerate plant growth.

So, accelerating and stimulating plant growth is both good and bad? Fatally flawed logic alert…


Alan Robertson
Reply to  Brent C
March 10, 2021 7:20 am

Nothing a Global Emissions Offset purchase won’t absolve.

Reply to  Brent C
March 10, 2021 8:22 am

Will Nine Year Kerry condemn air conditioning? The hotter it gets…the more air conditioning required….and then more air conditioning makes it hotter.

Reply to  Anti_griff
March 10, 2021 12:07 pm

I don’t know about Kerry but I’ve definitely seen people condemning it.

Peta of Newark
March 10, 2021 7:23 am

As if Joe’s election wasn’t bad enough, the insanity is now near perfect

people are using cannabis (and everything else that is called ‘drug’) to escape from 2 main things.

  1. Stress
  2. Loneliness

Stress mainly.
And where is the stress coming from if not endless tedious boring repetitive well-intentioned hypocritical virtue-signalling mendacious know-it-alls (sometimes laughably called: scientists) social-dysfunctionals who go under the banner of Politicians
and their legions and legions and legions of minions

Climate Change is The Stress Inducer of modern times.

But, they know they are doing all that: hence why alcohol is legal, also nicotine and now cannabis
If alcohol was a ‘new drug’ – it would never in a million years get approved for ‘food use’
It really is THE most hideous Brain Poison/Destroyer there could ever be.
Every doctor on this planet will tell you. They know, because most of them are perfectly addicted dipsomaniacs.
Medicine is a very stressful business

Our haha Leaders know that they are destroying (little) people with stress
They have learned, they instinctively know, that ‘drugs’ cause Dopamine release inside our heads and Dopamine acts as a ‘bandage’ to cover over the stress hormone Cortisol

Doesn’t fix or cure the stress, just covers it over for a while. Get that straight.
The Cortisol is still there and goes on to cause haha ‘Co-Morbidities
you may have heard of them recently

Hence, the little people are granted via huuuuge & epic munificence, some relief from all the stress that the politicos themselves, and know it, are causing.

Then what happens..
A bunch of perfect muppets, as we see here, patently didn’t get the memo and set about causing more stress about the very thing that was let loose to reduce the stress (of modern living, science and politics)

do you laugh or cry

Find out about Gabor Mate (pronounce Mattaye) and his book, available on audio also..
In The Realm Of The Hungry Ghosts

You will come to understand sooooo much about what’s going on in this world right now, you really will.
so much

How could Paul Ehrlich have seen this coming?
He didn’t and not even Monty Python could have made it up

Last edited 1 year ago by Peta of Newark
Reply to  Peta of Newark
March 10, 2021 1:32 pm

“tedious boring repetitive well-intentioned hypocritical virtue-signalling mendacious know-it-alls (sometimes laughably called: scientists)” – sorry I could only give this +1.

Geoff Sherrington
Reply to  Mike Jonas
March 10, 2021 3:04 pm

Be honest and make it “climate researchers”.
There are many good scientists at work in other sectors.
Geoff S

Reply to  Peta of Newark
March 10, 2021 6:29 pm

Alcohol in beer improves the brain: Cliff Clavin’s Buffalo Beer Theory.

“Well ya see, Norm, it’s like this… A herd of buffalo can only move as fast as the slowest buffalo. And when the herd is hunted, it is the slowest and weakest ones at the back that are killed first. This natural selection is good for the herd as a whole, because the general speed and health of the whole group keeps improving by the regular killing of the weakest members.
“In much the same way, the human brain can only operate as fast as the slowest brain cells. Excessive intake of alcohol, as we know, kills brain cells. But naturally it attacks the slowest and weakest brain cells first.
In this way, regular consumption of beer eliminates the weaker brain cells, making the brain a faster and more efficient machine. That’s why you always feel smarter after a few beers.”

Proof positive alcohol is good for you. At least as much prof as CO2 is bad for the “climate”.

March 10, 2021 7:33 am

and supplies of carbon dioxide for accelerated plant growth.

I could have sworn that several of our trolls have assured us that additional CO2 does nothing to help plant growth.

Climate believer
Reply to  MarkW
March 10, 2021 9:31 am

… LOL! that’s what jumped out of the page for me too.

Reply to  MarkW
March 10, 2021 9:51 pm

Pretty sure that most of them are very heavy cannabis users as well.

(plus other hallucinogenics)

That far-leftist fervor,

That lack of functional brain-matter,

the fantasies and hallucinations

the baseless egotism,

the twisted and distorted ideas of reality.

March 10, 2021 7:35 am

I was surprised to hear that the stuff is still being grown mostly indoors. I thought that was done primarily to hide the plants from the cops. Now that it’s legal, it isn’t necessary to hide it any more.

Reply to  MarkW
March 10, 2021 7:55 am

Growing indoors allows year round harvesting and pests are greatly reduced, so one can reduce use of herbicides and pesticides.

Climate control, interestingly, both heating and cooling is a major expense for indoor growers.

Abolition Man
Reply to  Scissor
March 10, 2021 9:24 am

…”pests are greatly reduced,”… Especially the two-legged rats that clip your fattest buds right before harvest!
The boobytraps installed by cartel growers to prevent theft from their crops grown in our national parks and forests made life much more interesting for hikers as well!

Reply to  MarkW
March 10, 2021 7:57 am

I believe it’s mostly to control the final quality – thc and CBD content. I doubt you can get top quality just growing it outdoors and letting the wind blow “twigs and seeds” around. Lots of otherwise empty factories available for growing space.

Joseph Zorzin
Reply to  Greg61
March 10, 2021 8:44 am

A huge, empty factory (that business moved to China of course)- in my area in Mass. is now a pot growing facility. When it was in planning stages- the owner said it would eventually employ 500 people. Many more dead factory buildings here- so it may become a huge industry.

Reply to  Joseph Zorzin
March 10, 2021 12:10 pm

A number of years ago when the Molson Beer plant closed down in Barrie Ontario it was unoccupied or so people thought. Turns out there was a huge grow op inside the huge building. Lots of perfect water and power aplenty to grow pot. Even Jay Leno had it on his show one night.

Roger Knights
Reply to  Greg61
March 10, 2021 12:09 pm

That’s too bad. I was hoping that pot could be grown by small farmers in hilly Appalachia. That was where it was grown most up until the 1930s (and during WW2). It isn’t hard on the soil.

Reply to  Greg61
March 10, 2021 2:11 pm

Actually you can. Outdoor produces high quality with less cost.
Indoor is faster and more secure

Granum Salis
Reply to  MarkW
March 10, 2021 9:11 am

Perhaps you’ll be equally surprised to learn that cannabis plants also have to be hidden from sunlight for half of each day.
Since most strains of cannabis are “short day” plants, they will not flower if they do not experience 10 or more hours of darkness each night.
Crops grown outdoors in fields, as in Mexico, are marketed regardless of flowering and the leafy material of the bush is what consumers must content themselves with.
Cannabinoids are much more concentrated in flower clusters and that is the much higher value product of indoor operations, which discard the leafy material either to compost or solvent extraction.

Reply to  Granum Salis
March 10, 2021 9:38 am

Depends on the strain, most merely need placed in locations with partial shade. It ain’t rocket surgery or brain science, its weed. And I would put outdoor grown PA Home Choke up for the pepsi challenge. Some of these old boys been growing a LONG time.

Reply to  2hotel9
March 10, 2021 10:31 am

I think it depends on the plants origin,about 12hs sun, 12hs nighttime.

Reply to  Granum Salis
March 10, 2021 2:13 pm

Not true. Outdoor grows mature as the days get shorter.
Outdoor harvesting is from oct to early dec depending on latitude

Mickey Reno
March 10, 2021 7:37 am

Yeah, but it’s worth it.

Steve Z
March 10, 2021 7:45 am

If the cannabis growers inject CO2 into their greenhouses to accelerate the plant growth, the CO2 is consumed by the plant’s photosynthesis, so that would be a net CO2 sink.

But if they consume electricity for “high-intensity grow lights”, generating that electricity would emit CO2.

Why can’t the cannabis growers be “green” and rely on natural sunlight to power the growth of the cannabis plants? Isn’t solar power supposed to reduce emissions?

Of course, when the pot is eventually smoked, it will emit CO2 (as well as carbon monoxide and other toxic air pollutants).

Hey libs, stop getting high and cooking the planet and drowning Florida! What would Al Gore think of this?

Keith Harrison
March 10, 2021 7:50 am

Perhaps this fuel cell from Denmark will solve energy and carbon emission issues for pot growers. Install a turbine to produce power to electrolyse hydrogen from water, then use the hydrogen in the fuel cell to power the the pot factory. High and dry, so to speak.

James Donald Bailey
March 10, 2021 7:54 am

I guess we now know these researchers think reindeer fly high on a regular basis. Well caribou anyways. Or maybe it is the polar bears polluting the North Slope. Arctic fox?

Somehow, their choice of what to plot makes it look like one of the scarcest populations in the country is somehow out polluting California when it comes to growing your own pot indoors.

I say quit harassing the natives. If you lived where the longest night took days before sunrise. Same thing with longest day taking days before sunset. And you had four proper seasons, June, July, August and Winter. Wouldn’t you feel the need to spend a lot of energy to grow your own. You are already spending the energy to heat and light your home. So what if you sacrifice a little of your precious heated space and put in a growing lamp.

People living in Alaska, North of the Arctic circle are few and far between. The community once called Barrow only has 4000 or so people living in it. Everybody up there could grow their own and it wouldn’t show up as a blip in the GHG emissions. Yet on this map, they are some of the biggest GHG polluters in the country.

Idiotic researchers distorting the view of the world around them.

March 10, 2021 8:01 am

Just more co2 bashing.

Co2 is 0.04% of the atmosphere and it is impossible for a trace gas to impact the climate. The UN/IPCC has not produced experimental evidence quantifying co2 climate sensitivity.

It is even questionable the impact water vapour, which is far more prevalent than co2, has on the climate.

The experiment, organized by Mother Nature, already shows beyond doubt: there is no positive feedback of water in the atmosphere.

March 10, 2021 8:18 am

Even members of the LDS church have been growing pot. Please don’t ask me how I know that.

Reply to  Phil
March 10, 2021 6:38 pm

The words of wisdom say no alcohol, tobacco or caffeine. Nothing about pot. But moderation in everything.

Dale S
Reply to  Drake
March 11, 2021 2:08 pm

The Word of Wisdom (1833) advised against the following: wine and strong drink, tobacco, and hot drinks. Wine and strong drink is now considered to cover all alcoholic drinks, and hot drinks were defined early on as tea and coffee (tea from the tea plant, not herbal teas). When other recreational drugs became prominent in the 20th century they were condemned as being against the spirit of the Word of Wisdom. Caffiene has been suspect for a long time because of its connection with tea and coffee and many LDS don’t use it; but it has never been explicitly prohibited and many LDS do use caffienated drinks. The latest official church statement on the Word of Wisdom (2019) says “avoid substances that impair judgment or are harmful or highly addictive, whether legal or illegal”. It goes on to specifically mention marijuana: “substances such as marijuana and opioids should be used only for medicinal purposes as prescribed by a competent physician.”

Long story short — recreational marijuana use is considered against the word of wisdom and has been for many decades. It’s unlikely any active LDS using marijuana recreationally are ignorant of that. But prescribed medical marijuana is explicitly allowed and the Word of Wisdom only addresses consumption, not production. Even if it had been prohbited, compliance with *any* commandment falls short of 100% in the LDS church (and any other church), so the existence of LDS pot-growers still would not be surprising.

Back to the regularly scheduled mocking about the giant carbon footprint that isn’t really a problem, let alone a crisis.

March 10, 2021 8:20 am

4:20 here in the UK

Time to green the planet

Later dudes…..

Reply to  Redge
March 10, 2021 11:03 am

Get with the program dude. That’s 4:20 California time but, if you’re having trouble sleeping, 20 past midnight should work well.

Abolition Man
March 10, 2021 8:35 am

As an apostate from the High Church of Psychedelia, I am always saddened to see the success of the MKUltra program these many years later! The CIA spent years studying drugs, especially LSD, for human mind control; only to realize they didn’t need to force it on the population. They only had to introduce a few of the 1960s counterculture leaders to it and then sit back and watch as an ever increasing portion of the electorate voluntarily started damaging their own cognitive abilities with the drugs they took in their de facto religious rituals!
The push to legalize rather than decriminalize marijuana received a huge boost when the pols realized they could tax it heavily, and Big Tobacco decided it could become a replacement crop for them to profit from! Sadly, supporters of legalization have largely ignored or denied the studys from around the world showing the increase in violence and psychological damage caused by frequent use of the high strength cannabis that is all the modern rage!
Alex Berenson documents the downside rather succinctly in his book; “Tell Your Children,” so I won’t reiterate his conclusions; but it seems obvious that there is much to be gained by the PTB if the populace has a large minority that is easily persuaded and often lacks sound reasoning skills. You might end up with a senile, decrepit old man as your titular ruler; while a cabal of unaccountable radicals control his every action for the benefit of your number one geopolitical competitor! Nah! That could NEVER happen!

Reply to  Abolition Man
March 10, 2021 1:54 pm

His best tweet:

“Very smart stupids,” I love it.

Tom Abbott
Reply to  Abolition Man
March 10, 2021 6:49 pm

“The CIA spent years studying drugs, especially LSD, for human mind control; only to realize they didn’t need to force it on the population.”

They don’t need drugs, all they have to do to control the minds of people is to be able to repeat a lie often enough, with enough authority, that the lie becomes the “truth”.

The Leftwing Media gives the Elites the means to repeat lies over and over and over again. And that’s what the Leftwing Media does: High-tech brainwashing of the population.

The first step to break the grip of brainwashing is to realize you *are* being brainwashed.

Look at the state this brainwashing has put our nation in. We have put a traitor and a criminal in the Oval Office.

If the Leftwing Media had not censored, right before the election, the New York Post story about Hunter Biden’s selling of his father’s influence, Trump would have been reelected Depending on which poll you looked at, between 10 and 20 percent of those who voted for Biden said they would not have voted for him had they known about his son’s shady overseas dealings.

Joe’s looking shaky lately (mentally). Maybe that’s why Kamala is talking to heads of state instead of Biden.

Kamala is the one who told an obvious lie about Kwanza and herself, and she told this lie when she didn’t have to do so. Nobody cared about Kamala and Kwanza, but she apparently felt compelled to enhance her image by connecting herself to the celebration of Kwanza.

When a person lies when they don’t have to, there’s something wrong with them. They have a mental problem of some kind or another.

Not much to look forward to.

Rick C
March 10, 2021 8:36 am

Someone needs to sent this along to Bill Maher – the world’s leading advocate for climate mitigation and weed.

March 10, 2021 8:50 am

It is called weed for a reason, you do not need hyper expensive indoor operations. Simply make it legal for people to grow their own, problems all vanish. Oh, yea, Democrat Party and other leftist enemies of the human race want more problems. Never mind.

Coach Springer
March 10, 2021 8:52 am

I don’t think green or any other concerns figure materially on the commercial growth of weed. In my “recreational” state, someone ran for city council on a platform of using vacant tear down lots in decaying residential area to raise marijuana. Besides the “green” attributes and to borrow a common phrase from addiction recovery, “If we keep on doing what we’re doing, we’ll keep on getting what we’re getting.”

It seems to me that agricultural processers of grain like ADM could make short work of competition in growing. ADM once had a giant hydroponic farm run on their excess heat and CO2 that they ran just for virtue signals back in the day. Does weed sell for more per pound than tomatoes?

Taxes? Could weed be the new alcohol, tobacco, firearms and gaming? I am sure that my complaints about the ill effects of cannabis use on public safety and society will be used to justify the taxes and while protecting the cash cow.

March 10, 2021 9:06 am

Illegal cartel operated grow ups are far more damaging to the environment.

Steve Rinella’s podcast did an episode entitled “The Weed Wardens” that details how Conservarion Officers teamed with former Spe-Operators to combat this menace.

Diversion of pristine fisheries for irrigation and a slew of animal poisonings from excessive dosing of pesticides is commonly encountered after raids.

A book on the subject is available on Amazon:

March 10, 2021 9:21 am

Who knew that potheads will lead the battle against the alarmists?

March 10, 2021 9:23 am

This reminds me of something. Alex Berenson published a book on the dangers on cannabis and how it causes violence and psychosis. The people who support the legalization of it respond by rants and threats, and don’t seem to realize their ad hominem attacks and threats just proved him right.

I speak from first-hand observation when I say marijuana is neither healthy or safe. Anybody who says otherwise is just bending the facts to fit their narrative.

Reply to  Wade
March 10, 2021 11:37 am

Neither is alcohol, tobacco, or any number of other products.
Should we outlaw everything that potentially has bad side effects?

Reply to  MarkW
March 11, 2021 3:56 am

Strict rationing of water and oxygen, both are bad in excessive amounts.

Reply to  Wade
March 10, 2021 1:55 pm
Reply to  Wade
March 10, 2021 2:16 pm

Alex is full of manure.
Many thing people do is not good for them

March 10, 2021 9:30 am

My son grew the 4 plants allowed by the Canadian gubmint in My greenhouse. Tech in spades – seeds ‘feminized’, different strains for THC and CBD. Apparently if there is any ‘wildtype’ male pot around it will fertilize the feminized plants and you get seed instead of bud. Harvesting took him several days picking individual buds and separating the leaves out. Even with one plant getting mould, my freezer now has enough for him for years to come.

Reply to  Fran
March 10, 2021 9:40 am

Got to work on that drying process. Generally hanging plants upside down for first stage of drying makes it a bit easier.

Bruce Cobb
March 10, 2021 9:41 am

There is also an insatiable demand for White Castle burgers. Coincidence?

Reply to  Bruce Cobb
March 10, 2021 2:21 pm

When I first saw this I thought it was from The Babylon Bee…but it was real, bright young ladies!

Joel O'Bryan
March 10, 2021 10:04 am

Anesthetizing the masses as the billionaire elites push us into feudalism with the climate scam.
Seen in that regard, MJ legalization and grow operations support climate change policy.

Last edited 1 year ago by Joel O’Bryan
Reply to  Joel O'Bryan
March 11, 2021 3:42 am

Among those I know who smoke there is no “anesthetizing” effect, they are just as pissed off about all this leftarded stupidity as those who don’t smoke. Once again leftism creates the exact opposite of its intent.

Jeff Alberts
March 10, 2021 10:25 am

I have as little use for pot as I do for alcohol, that is none at all.

Granum Salis
Reply to  Jeff Alberts
March 10, 2021 12:57 pm

If you are a typical human, you might have more use for alcohol than you think!

Endogenous ethanol and acetaldehyde can therefore be regarded as compounds which fulfil substrate, regulatory and modulator functions.”

Ostrovsky PubMed

Reply to  Jeff Alberts
March 10, 2021 1:12 pm

Strange though, that receptors for both molecules already exist in your body. Either you have already evolved that way, or divine intervention had a previous plan.

Jeff Alberts
Reply to  Doonman
March 10, 2021 5:50 pm

That’s because alcohol occurs naturally. I should have said supplemental alcohol.

No evidence for divine intervention, so it must be evolution.

Zig Zag Wanderer
Reply to  Jeff Alberts
March 10, 2021 3:10 pm

Your body produces alcohol all by itself, albeit in small amounts for most people. Some people have a ‘disorder’ whereby they produce enough alcohol to keep them mildly drunk all the time. They usually need to avoid certain foods like carbohydrates that can easily be fermented.

Reply to  Jeff Alberts
March 11, 2021 3:51 am

That is your choice and your opinion and you are entitled to have it.Other people have their own and are entitled to them, when you use armed governmental force to push yours on everyone else that is when problems begin.

March 10, 2021 10:27 am

Please do relax Hailey and Jason. Cannabinoid production is now in the hands of synthetic biology, which means that you can stop scaring the children about greenhouse gases. The sugar feedstock is totally sustainable, to use one of the phony-leftist bullsh!t words and, even if it weren’t, climate sensitivity to atmospheric CO2 increases has never, and that would be NEVER, been shown to be something other than ZERO when using scientific methods.

Cheech Marin
March 10, 2021 10:34 am

Taco Bells near college have the biggest increase in carbon footprint.

March 10, 2021 11:54 am

During the Covid lockdowns in Colorado our Cannabis shops were allowed to remain open as essential businesses.

March 10, 2021 12:29 pm

The use of cannabis is known to be an independent risk factor in the development of schizophrenia. A Swedish study of army conscripts found that heavy cannabis users at time of conscription were six times more likely to develop schizophrenia than non-users.

March 10, 2021 1:12 pm

I expect with increasing marijuana smoking, we will see a steady increase in cancers of the respiratory system starting in a few years.

Robert W Turner
March 10, 2021 2:12 pm

I can’t believe with over 100 comments no one has commented on the carbon footprint map. California indoor grows must be using unicorn power and fairy dust for electricity, because last I checked they were the state that was importing the most electricity, and the state they are importing it from has a much higher carbon footprint according to the map. It even appears the closer you get to the Libtard Nexus of San Fran the lower the footprint is.

Iowa and Kansas, which are #1 and #2 in terms of wind energy production per capita, don’t seem to have any influence on the map. And Vermont, which generates almost all of their energy from hydroelectric, also has just as high as a carbon footprint as anywhere else outside the glorious utopia of CA. I’d certainly like to know the secret, probably has something to do with a piece of paper that claims that their indoor grows are only pulling “renewable” energy off the grid.

P.S. It makes me feel dumb just saying ‘carbon footprint’.

Last edited 1 year ago by Robert W Turner
graham dunton
March 10, 2021 2:17 pm

The denigration of a product of commercially significant, simply due to one aspect of the plant is disappointing. I am not a pot user, but have followed the research and acknowledge the damage of selected varieties with high THC levels, (SIC) Wiki- (THC), the principal psychoactive constituent. Some strains have been selectively bred to produce a maximum of THC(EQ)
But this has stimmed the commercial use in agricultural use, in many countries.
Valuable Seed and fiber, and wide growing range.
The medical development, extracts from the cannabis plant, being researched for their pain relief properties.

March 10, 2021 2:30 pm

It’s the great battle of the lobbyist spin.

March 10, 2021 2:32 pm

The industry just needs to respond the way Clinton did–“We didn’t inhale.”

March 10, 2021 4:03 pm

Once again the Left takes a bite out of itself on the road to utopia. The ouroboros is gaining steam.

Xinnie the Pooh
March 10, 2021 4:38 pm

Worldwide legalisation would get production back outdoors. Fingers Crossed!

March 12, 2021 11:59 am


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