Health Canada, which is facing a growing controversy over tainted medical marijuana, cannot say with certainty how widespread the use of banned pesticides is within the industry. Instead, the regulator has been leaving it up to the growers to police themselves on the use of potentially harmful chemicals.

In a background briefing with The Globe and Mail, a senior Health Canada official acknowledged that even though the government prohibits the use of potentially harmful chemicals such as myclobutanil, – which is known to emit hydrogen cyanide when heated –the department has not been testing cannabis growers to ensure the 38 federally licensed companies were, in fact, not using it.

“Up until this point, we have not required licensed producers [LPs] to test for any unauthorized pesticides, nor have we been testing all LPs, and it is because we expect their companies to be pro-actively watching and taking the appropriate measures to ensure non-authorized products aren’t used,” the senior official said.

– Read the entire article at The Globe and Mail.