Maine’s short, cool growing season narrows the field fast. The most reliable cover crops here are winter rye, oats, field peas and buckwheat, chosen by…

Cover crops grow reliably in Quebec gardens, but the calendar here runs on a shorter, colder script than most guides assume.

Louisiana’s answer depends on splitting the calendar into two very different jobs: a mild, nearly frost-free cool season and a long, brutally hot summer.

Cover crops on Prince Edward Island go into the ground once the frost risk of late spring has eased, usually from late May into June for warm-season…

For most of Kentucky, cereal rye is the safest bet for a full-season cover crop, with crimson clover and hairy vetch as strong legume partners where…

Pennsylvania gardeners get two very different windows for cover crops: a spring one that opens once soil temperature catches up to the calendar, and a…

Cereal rye, hairy vetch, and crimson clover top the list for most of Kansas, with oats and daikon radish filling the gap when a fall planting window is…

Cover crops work reliably in most Oregon gardens, but timing splits sharply along the Cascades.

Cereal rye is the cover crop that works almost everywhere in Iowa, from the coldest counties near the Minnesota line to the milder ground around Des…