EPA Issues Guidance On Marijuana Pesticides Amid Industry Uncertainty

When he was managing a 3,500-plant medical marijuana grow facility in Denver, Adam Koh would have his staff thoroughly inspect his crops several times a week for signs of infestation. Tiny bite marks on the cannabis leaves could mean two-spotted spider mites were piercing the plant’s skin and sucking up nutrients. Small piles of what looked like powdered sugar could be the beginning of a mildew incursion.

Koh opted for natural crop management options, so if his staff spotted a problem, he’d isolate the infected plants or use organic pest control options. But a few times, when the infestation was out of hand, he’d destroy an entire grow room’s plants and start again. That option wasn’t cheap: His biggest flower room held 164 plants, and if he ever lost a whole crop in there, he could have been out 75 pounds of cannabis, which by the going rate for retail...

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http://www.ibtimes.com/marijuana-legalization-2015-epa-issues-guidance-marijuana-pesticides-amid-industry-1959030