Between two corn fields in central Iowa, Lee Tesdell walks through a corridor of native prairie grasses and wildflowers. Crickets trill as dickcissels, small brown birds with yellow chests, pop out of the dewy ground cover.

“There’s a lot of life out here, and it’s one of the reasons I like it, especially in these late summer days,” Tesdell said.

This is a prairie strip. Ranging from 10-40 metres (30-120ft) in width, these bands of native perennials are placed strategically in a row-crop field, often in areas with low yields and high runoff. Tesdell has three on his farm.

He points out several native plants – big bluestem, wild quinine, milkweed, common evening primrose – that came from a 70-species seed mix he planted here six years ago. These prairie plants help improve the soil while also protecting his more fertile fields from bursts of heavy rain and severe storms, which are becoming more frequent.