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Cannabis Industry’s Growing Pains

News like this reminds us how far out into uncharted waters the cannabis plant has sailed. Do you know which pesticides are safe to use on cannabis and how much is too much? In a short time, we will know the correct answer to that and a thousand other questions, but until then, we are all going to thrash around while we figure out what legal cannabis is going to mean.


Two tests on concentrated marijuana products sold at one store found levels of three pesticides that the state says cannot be used to grow marijuana. Both items were manufactured by Mahatma Concentrates in Denver, CO, which made its extracts from raw marijuana grown by Treatments Unlimited, which operates the Altitude shops in Denver.

The level for one of the pesticides was six times the maximum amount allowed by the federal government on any food product — and 1,800 times the highest level Denver accepted when it quarantined marijuana plants earlier this year. The pesticides found were myclobutanil, imidacloprid and avermectin.

Treatments co-owner Chase Bradshaw said his company did use products that contained the unapproved pesticides.
. . .
The Post had five brands of concentrate tested with the cooperation of the two shops that sold them. State law only allows licensed marijuana companies that produce the plant or its products to test or sell them at state-approved labs.

Consumers cannot independently have marijuana tested in Colorado, though other states allow the practice.

Concentrated marijuana is in a variety of popular products — oil, wax, butter or shatter — and is ingested in ways ranging from inhalation to rubbing it on the skin.

The shops agreed to submit the products to Gobi Analytics for an analysis that was paid for by The Post.

Products tested that came from four of the manufacturers — The Lab, TR Scientific, Bolder Extracts and Happy Camper Concentrates Co. — showed no unapproved pesticides, according to Gobi.

Results on Mahatma’s manufactured products, however, found potent levels of myclobutanil and imidacloprid, as well as measurable amounts of avermectin, all disallowed for use in marijuana production in Colorado.

Myclobutanil is considered “slightly hazardous” by the World Health Organization; imidacloprid is considered “moderately hazardous.”

As for Denver’s quarantined cannabis plants:

Mahatma internal tracking paperwork shows the original plants it used to make the products that tested positive for pesticides were harvested at Treatments in December 2014 and March 2015.

That was just before, and while Denver health officials quarantined more than 100,000 marijuana plants over concerns about pesticides, including the three identified in The Post’s test results.

Treatments and one of its shops, Altitude East on Jackson Street, was among the 11 marijuana operations whose plants were held by the city and later tested positive for unapproved pesticides, documents show. Over time, most of the plants were released when pesticide residue levels dropped to the lowest amount permissible on food crops.

It would be nice not to use pesticides, but talk to any closet grower and expand your awareness of spider mites.

Interesting article about the a-birthing cannabis industry figuring out what will come to be called “best practices.”


[Image via: Google images “science”]

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Author: DavidB

a heathen, but hopefully not an unenlightened one

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