Answer: There is a way to check for chemical residues on plant parts. You can either take a sample to a private lab or contact your local Cooperative Extension office for help. Each county has a Cooperative Extension office and if you're not familiar with yours, contact University of Minnesota at 612 624-1222 and they'll provide an address and phone number. Sometimes you can even mail your plant sample into their plant pathology lab. Check with them for complete details.
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