The Globe and Mail reported today that myclobutanil, a banned pesticide, has been found in medical cannabis grown by Toronto-based licensed producer Mettrum Ltd. but neither the company or Health Canada informed the public.

Myclobutanil, a chemical that emits poisonous hydrogen cyanide (also known as prussic acid) when heated, is also prohibited for use on legal cannabis in Colorado, Washington and Oregon.

On Nov. 1, Mettrum announced a voluntary recall of their product after a review by Health Canada found it contained pyrethrin, which is used as an insecticide on crops but is not approved for use on medical cannabis. Mettrum said the chemical was used by mistake because it was not listed on the ingredients of a foliar spray the LP purchased from a third party.

“Quality, purity and transparency are Mettrum’s top priorities, which is why we have initiated a voluntary recall of the exposed product and are reaching out directly to all impacted clients,” said Mettrum CEO Michael Haines at the time. “While the ingredient is not harmful and there is no negative effect on product quality and safety, we are doing everything possible to ensure client satisfaction and confidence is upheld.”

But after samples underwent further testing, Health Canada researchers discovered cannabis samples also contained myclobutanil, which is a widely known banned substance.

It was only after the LP sent automated phone messages to customers mentioning myclobutanil that a reporter was tipped off.

Read the full story by Grant Robertson at the Globe & Mail.

  • bob

    well metrru now managed by canopy ….canopy managed by x politicos……x politicos live by deceit…no wonder no one informed till forced too

    if they are so concerned they can have tests done immediately upon harvest with results back before weed dried..for 200$ …but they have been allowed to test their own so……for their bottom line better to send and pray someone does not report them

    it is common practice now for these folks to use 3rd parties to purchase banned substances i know tilray does too.

    i thought these people had hired decent growers from BC??? two i know who worked for tweed and aurora quit in disgust…..but we do not use pesticides…if you know what you are doing it is unnecessary

    cannot wait to be able to compete directly with those hmmmm ???/// scoundrels???

    B

    • Robert Wright

      Agreed no pesticides only natural organic pest control on my cannabis please !

  • disqus_10OF4byv9w

    If you can’t grow pot without pesticide you shouldn’t be in the business!

  • Robert Wright

    This is why I want to grow my own haven’t these idiots heard of predator bugs like ladybugs or praying mantis there are many more to choose from. I was talking to a greenhouse vegetable grower he said the bugs are cheaper and more effective than spray.
    He also said in the old days every time you had to spray it stunted your crop and set you back a week or two so the spray also affects the plant systemically .
    I guess the only thing health canada is good at is violating citizens human and constitutional rights there sure aren’t doing a good job with our health and well being.
    No one on the pro cannabis side is going to be to happy when they see what the liberals do to legalization those task farce recommendations were just that recommendations they are not etched in stone and I will be surprised if they implement any of them.

  • http://rydermanagement.ca RyderMgt

    Unbelievable! Thanks for this info

  • bob

    HEY HOW ABOUT 3 TIMES THEY DO THIS THEN PULL THIER LICENCE…..WOULD A WINERY GET AWAY WITH POISONING ITS CUSTOMERS???

    NEEDS TO BE A PENALTY FOR PURPOSELY SENDING POISIN MEDICINE TO SICK PEOPLE…

    BUT OF COURSE PENALTY FOR FAILURE IS NOT A REALITY WHEN POLITICOS AND BEURACRAPS SET THE RULES AND ARE NEVER PENALIZED FOR THIER FAILURES..ON THE CONTRARY THEY ARE OFETN REWARDED FOR CREATING MORE WORK FOR EACH OTHER…

    ALLOWING THEM TO SET THE RULES IS BAD FOR THE CONSUMER

    BUT IN THE END IF YOU WANT TO CHANGE SOMETHING IT IS ONLY WHERE YOU SPEND YOUR MONEY THAT CAUSES CHANGE SO SPEND WISELY OB1

    I HAVE NEVER UNDERSTOOD WHY PEOPLE WHO ARE PAYED WITH TAX DOLLARS PAY TAXES ON THAT INCOME..THE ONLY THING I CAN FIGURE IS IT IS A MAKE WORK PROJECT AGAIN AND IT ALLOWS THEM TO PRETEND THEY ARE NOT WELFARE RECIPIENTS WITH A TITLE…