late spring and again in the fall
A turnip root can keep for weeks. And look at the greens storage info for what to do with the tops. These are roots filled with moisture so you want to store them refrigerated and lightly covered so they don’t begin to shrivel and wilt. Storage turnips will keep for months – and if we all had root cellars, we could keep our turnips in damp sand for months, too. But lacking one of those handy root cellars, refrigerate yours and try to use them up in a week or two.
NOTE: we see two types of turnips in our CSA: the purple top traditional turnips, and the smaller, rounder, white hakurai turnips. The latter are sometimes referred to as salad turnips, being mild and tender enough to eat raw. They don’t have the keeping power of their purple top cousins.