Are these naturally occurring pesticides safer than synthetic? According to Jeff Gillman, a professor of nursery management at the University of Minnesota and organic practice expert, it depends on the amount used:
"To control fire blight on the same acre of land," he explains, "I could use a tiny amount of a potent synthetic that has proved safe over the last 50 years, or a much larger amount of an organic pesticide." He demurs on saying which is better, saying, "I want people to know that there are definitely tradeoffs."
Once again, the best answer seems to be buying local produce from growers you trust.
• Check it out: Organic Pesticides: Not An Oxymoron at NPR
Did you know some pesticides were allowed in organic produce? Will this change your buying habits?