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A prescription for pesticides? Why lawmakers considered a novel approach to neonics

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A man in a hat sits in an office looking at purple seeds
Rae Solomon/CPR News
Marc Arnusch, head of Arnusch Farms in Keenesburg, Colo., sits in his office with a bag full of alfalfa seeds that have been coated with a chemical treatment that includes neonicotinoids. Feb. 4, 2026.

For a lot of farmers in Colorado, and across the country, insecticides known as neonicotinoids, or neonics, have been a game changer. But what’s been a breakthrough for some has been a nightmare for others. Neonics are being blamed for die-offs in domestic bees and native pollinators, and there’s growing concern over their potential impacts on human health as well. This year, some Democratic lawmakers proposed a bold step to restrict the chemicals’ use in Colorado; they wanted farmers to get something like a prescription to be allowed to use neonic-treated seeds.

CPR’s Bente Birkeland and Rae Solomon discuss what those lawmakers tried to do, and why they faced such fierce opposition from the get go.

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Purplish is produced by CPR News and the Capitol News Alliance, a collaboration between KUNC News, Colorado Public Radio, Rocky Mountain PBS, and The Colorado Sun, and shared with Rocky Mountain Community Radio and other news organizations across the state. Funding for the Alliance is provided in part by the Corporation for Public Broadcasting.

Purplish’s producer is Stephanie Wolf. Sound design and engineering by Shane Rumsey. The theme music is by Brad Turner. Megan Verlee is the executive producer.