Pie pumpkins and winter squash from the fall garden can still be on hand for holiday baking, but they need very different amounts of care to get there. University of Minnesota Extension says pumpkins are very sensitive to temperatures below 45 degrees Fahrenheit and keep about two months, while winter squash can last 2 to 6 months depending on the variety.
Both crops do best in cool, dry storage rather than the cold, damp conditions that suit root vegetables. With Thanksgiving on Nov. 26, a pumpkin picked in October and stored well still has time to become a pie, and a hard-shelled squash can carry on into late winter.
Why Pumpkins Struggle Below 45 Degrees
The UMN Extension harvest-and-storage guide lists pumpkins for cool and dry storage, which it defines as 50 to 60 degrees Fahrenheit and 60 percent relative humidity. It flags them as very sensitive to anything below 45 degrees and gives an expected shelf-life of two months.
Cold damage is a known problem for the whole squash family. A UMass Amherst fact sheet on pumpkin and winter squash storage says chilling injury is possible below 50 degrees and grows worse as temperatures fall or exposure lasts longer. Fruit that has been chilled will not store well and should be used first, the fact sheet says. That makes an unheated porch or garage a poor long-term home once nights turn cold, even if the pumpkins look fine at first. Pumpkins doing double duty as porch decor, perhaps beside these cozy winter crafts, belong indoors before a hard frost if they are headed for the oven later.
Storage time also depends on what kind of pumpkin it is. UMN’s pumpkin and winter squash growing guide notes that jack-o’-lantern pumpkins have bland, stringy flesh, while pie pumpkins tend to be smaller and sweeter. Those pie pumpkins are the ones worth saving for the desserts on this list of pies that show up on Thanksgiving tables across America.
Winter Squash Can Go Much Longer
Winter squash is the long keeper of the pair. UMN says it should be harvested when the shells are hard and before a frost, and its expected shelf-life runs 2 to 6 months depending on variety. Its growing guide recommends storage around 55 degrees with good air movement and relative humidity between 50 and 75 percent.
The University of Illinois Extension spells out which squash last longest. It says large, hard-rind winter squash can be stored for up to six months, while smaller acorn and butternut squash keep only up to 3 months. UMass groups acorn, delicata, sweet dumpling and certain pie pumpkins together as types that can be eaten right after harvest and store for 2 to 3 months.
Illinois also says to store squash in a dry place and not to pile them more than two deep, with a single layer of fruit that does not touch preferred where space allows, to slow the spread of rot. Finding that much flat space can take planning, and these clever storage hacks offer ideas for open shelving, while these best practices for seasonal storage cover keeping bins dry and off the floor. Refrigerators are too humid for whole squash, according to Illinois, though cut pieces belong there.
Picking a Pumpkin That Will Keep
The Iowa State University Extension and Outreach pumpkin guide advises choosing pumpkins that are firm, heavy and uniform in color, without cuts, holes, bruises or soft spots, and with the stem still firmly attached. Pumpkins should never be carried by the stem, which may break off. After curing and proper storage, pumpkins should stay in good condition for 2 to 3 months, Iowa State says.
Where they sit matters too. Iowa State warns against storing pumpkins near apples, pears or other ripening fruit, because ripening fruit releases ethylene gas, which shortens their storage life. That is worth remembering in a kitchen stocked with these apple varieties bakers reach for in the fall. Iowa State also recommends a single layer with air circulating around each pumpkin and periodic checks to remove any that show decay.
Curing or Not: The Sources Differ
Curing, a short warm holding period that hardens the skin, is where the advice splits. UMN’s storage list says curing winter squash is unnecessary and that the Table Queen variety, an acorn type, should skip curing altogether. UMN’s growing guide, meanwhile, suggests field-curing pumpkins and squash in place for a week or two in dry, sunny weather, or indoors at about 80 degrees if the weather turns cold or rainy.
Other extension services describe a warm curing step as well. Iowa State recommends curing pumpkins at 80 to 85 degrees and 80 to 85 percent relative humidity to harden their skins, then storing them at 50 to 55 degrees. Illinois suggests holding most winter squash at about 70 degrees for 10 to 20 days, with acorn, sweet dumpling and delicata as the exceptions. UMass says curing can actually shorten the storage life of acorn and delicata types, which matches UMN’s caution on Table Queen.
Taken together, the guidance points one way for acorn and delicata types: skip the warm spell, move them straight into cool storage and cook them first. Most other hard-rind winter squash are the ones Illinois recommends curing before they settle in for a long keep.
From Storage Shelf to Pie Plate
When storage space runs out, UMN suggests preserving the harvest by drying slices in a dehydrator, freezing mashed squash or pressure-canning cubes. Squash can stand in for pumpkin in pie, too. Illinois says most people cannot tell whether pumpkin or squash went into a pie, and Iowa State notes that most canned pumpkin is actually made from butternut or other winter squashes, including the Dickinson variety.
Iowa State gives the usual pumpkin pie spice blend as 4 parts cinnamon to 1 part each of ginger, nutmeg, allspice and cloves. Mixed into a homemade filling, that blend is a fitting finish for a pumpkin that made it from the garden to late November.
This article was produced with AI assistance and edited for accuracy against the sources linked above.
Image: Elvert Barnes – CC BY-SA 2.0/Wikimedia Commons
