Wednesday, October 7, 2015

Great Pumpkins: Storing Garden Squash

Traugers-farm-bucks-county-largeLinus, the precocious, blanket-toting “Peanuts” character, waited faithfully for The Great Pumpkin all night on Halloween in spite of being disappointed every year. Perhaps his unwavering belief in the mythical pumpkin was spurred on by the fact that almost every year brings the world a bigger “great pumpkin” of the sort one can measure and – at least potentially – eat.

Of the approximately 1.5 billion pounds of pumpkins grown annually in the U.S., only a very few are grown for size. Primarily within the last thirty years, giant pumpkin enthusiasts (that’s regular-size people, giant produce) have developed varieties that attain jaw-dropping proportions. From a nearly 500-lb. world record in 1981 to a half-ton in 1996 to the recent 2,096-lb. world champion, today’s giant pumpkins would be a dream come true for Linus.

Being the scholarly lad he was, Linus probably knew that pumpkins are actually a type of winter squash, one of many varieties first selected for and cultivated by Native Americans. Squash, in fact, is an Algonquin word adopted by Europeans. We chose the Greek-based term ‘pumpkin’ to describe the ribbed orange variety, mostly because “The Great Squash” didn’t have the right ring to it.

The Hubbard squash and small hard pie pumpkins we grow today are among the many squash types that Native Americans were raising in this area at the time of first European contact. The Iroquois would dry strips of pumpkin and squash for use in late winter after the storage life of whole squashes had run its course. If the old-time Iroquois had dehumidifiers and thermostats, their pumpkins and squash could have lasted all winter.

Successful storage actually begins in the field or garden. Your pumpkins and squash will last longer if you bring them in before the first hard frost (below 29F). Always pick them up supported from the bottom, and never carry them by the stem; if that breaks, rot will set in. For pumpkins, a 10-day hardening-off treatment of 80-85F at 80% humidity will help harden the rind and prolong storage life. This treatment isn’t necessary for butternut, turban and Hubbard, and will actually harm acorn squash.

In terms of storage conditions, the critical numbers are 50 and 70. Never cooler than 50F or more humid than 70%. The ideal numbers are 60F and 60% —pretty easy to remember. Store pumpkins and squash away from apples, which produce ethylene gas that will hasten ripening and shorten storage life. Check stored squash every few weeks, as one rotten one can spread decay to others.

Under ideal conditions acorn squash will store for 5-8 weeks. Pie pumpkins, as well as butternut and buttercup squash, can go through the winter, and it’s not unheard of for a Hubbard to last into the following summer. Because the record-breaking pumpkins of today have Hubbard genetics, I’d expect they could last quite a while. But who’s going to build a storage room around a one-ton pumpkin?

While it was a Swiss farmer who earned a place in the 2014 Guinness World Records book, regional growers are not far behind. Last year in Clarence, NY, the largest giant pumpkin weighed in at 1,969 lbs. with the second-place entry close behind at 1,916 lbs. If you want more information on yearly pumpkin weights, go to www.bigpumpkins.com for a state-by-state listing.

It would seem this agricultural over-achievement may have been predicted fifty-some years ago by little Linus. Maybe I should revisit those old comics to read what else the child philosopher had to say.

Photo by Wikipedia user Frenchtowner.


Paul Hetzler

Paul Hetzler is the Horticulture and Natural Resources Educator at Cornell Cooperative Extension of St. Lawrence County.

You can reach Paul at the Cornell Cooperative Extension office in Canton at (315) 379-9192.




4 Responses

  1. I have a lovely orange 5 lb. pumpkin harvested Oct. 2014. Kept it in my pantry from last fall ’til I took it to the quonset this June (2015). It is still firm with no sign of rot but probably dehydrated some. Just for fun, I’ll bring it back to the pantry to see how long it lasts!
    Fritzie Blizzard

  2. SwilliAm says:

    Fun reading! Reminds me of an article I wrote a few years ago on a local grower of Atlantic Giants:

    http://www.stevedaniels.com/index/pumpkin.html

    Thanks for the hubbard squash info, quite an undesirable, and ugly looking squash, but I’ve found now it’s my favourite squash, especially for squash soup!

  3. Paul Hetzler Paul Hetzler says:

    Very cool about that everlasting pumpkin!

    SwilliAm, enjoyed your article–thanks for the link!

  4. AG says:

    God gave us everything we needed for every season. I love all varieties of “squash” and “pumpkins”.