Northern Colorado's growing season runs roughly late April through October, bookended by hardy storage crops the rest of the year. Here's what to actually look for at the market or in your CSA box, month by month, based on typical Front Range harvest timing — exact timing shifts a few weeks either way with the weather.
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Northern Colorado sits around USDA zone 5b–6a with a semi-arid climate and a real risk of late spring and early fall frosts, so exact harvest windows move a couple of weeks earlier or later depending on the year. Growers with hoop houses or high tunnels (several CSA farms in the directory run them) stretch both ends of the season further than open-field timing alone would suggest.
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Roughly late April through October. Outside that window, storage crops like potatoes, onions, and winter squash carry the market, along with stored apples and garlic.
Northern Colorado sits around USDA zone 5b–6a with a semi-arid climate and a real risk of late spring and early fall frosts, so exact harvest windows can move a couple of weeks earlier or later depending on the year. Farms running hoop houses or high tunnels stretch both ends of the season further than open-field timing alone would suggest.
August, when tomatoes, peppers, and eggplant all peak together alongside sweet corn. Tomatoes and peppers stay strong into September before the first frost ends the run in October.