Seasonal produce
How to store winter squash (and how long each kind lasts)
Whole, mature winter squash is built to keep. Kept cool and dry, the hard-shelled kinds last for weeks to months. Here’s which ones keep longest, and how to stop one from turning early.
Which squash keep longest
Iowa State Extension puts hubbard at about 5–6 months, butternut at about 2–3 months, and acorn at about 5–8 weeks. UMass Extension groups acorn, delicata and other C. pepo squash together at about 2–3 months, so treat the thin-skinned ones as the eat-first pile. Spaghetti squash is a C. pepo too. Neither extension source gives a separate figure for it, so eat it early with the acorns and delicatas.
Cure, then cool and dry
Growers cure most winter squash for about 5–10 days at 80–85°F and 80–85% humidity to harden the skin and heal scratches. Skip it for acorn: curing actually cuts its storage life. At home, store-bought squash is usually ready to go. After that, keep it somewhere cool, dry and well ventilated, about 50–55°F. Below 50°F risks chilling injury, so a cool closet beats the fridge. Keep squash away from apples and pears, whose ethylene shortens storage life.
Whole vs. cut storage
Whole: off the floor, not touching, out of the sun, stem left on. Cut: once it’s open, the long shelf life is over. Wrap it, refrigerate it and cook it soon. Bruised or punctured skin lets decay in, so handle whole squash gently.
Signs it’s going bad
Soft or sunken spots, mold, leaking, or a sour smell mean it’s time to compost it. Use any squash with a nicked skin or a missing stem first.
Use-it-up ideas
Roast the eat-first ones (acorn, delicata) in the roasted squash skillet. Check the October and November guides for what’s peaking alongside them.
Recipes and related guides
Roasted squash skillet · October produce guide · November produce guide · Produce checklist.
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