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Harvesting and Storing Root Vegetables

By Toni Leland (tonilelandDecember 28, 2011
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The warm, luscious tones of yellows, greens, and reds of summer vegetables fade as fall approaches and for many lucky gardeners, the earth yields the hearty, life-sustaining root vegetables that get us through winter.

Gardening pictureTiming the harvest is important, but knowing how to store these gems is just as critical.
The arrival of freezing temperatures is an integral part of this process; some vegetables must come out of the ground before any frost occurs, but others don’t complete their ripening until they’ve experienced a freeze. Frost occurs from between 36˚F to 32˚F; light freeze is 28˚F to 31˚F, moderate freeze is 24˚F to 28˚F, and a hard freeze is temperatures below 24˚F.

In temperate regions, some root vegetables can remain in the ground if heavily mulched. However, heavy rain or standing water can cause decay.

Which root vegetables must be harvested before a freeze?

beets

Beets

 carrots

Carrots

 bagas

 Rutabaga, or Swede


Beets
Carrots
Onions & shallots
Garlic
Potatoes
Radishes (can withstand very light frost)
Sweet Potatoes
Salsify
Rutabaga

Which root vegetables improve with freezing temperatures?

Horseradish
Parsnips
Turnips

 onions

Onions & Shallots

Some veggies can be left in the ground until freezing weather by mounding soil over the shoulders of vegetables like carrots and beets. This protects them from snap freezes. Straw is also an excellent insulator against frigid temps and can delay harvest a bit longer. Once the freeze comes, dig the remaining roots, clean them well, and store in a cool, dark, dry area.

Parsnips are an exception to the rule, as they withstand freezing and even improve in flavor if left in the ground to dig in the spring.

Storing the harvest

Always select the best of the crop to store; and use, preserve, or freeze any that are not perfect. Check stored vegetables frequently and discard any that have deteriorated.

Home gardeners can utilize several different ways to mimic a root cellar, if one isn’t available. The key to root storage is controlled humidity, moderately cool temperatures, and no light depending on the variety. A good storage area must also be protected from ground water and rodents.

The University of Minnesota Extension Office outlines three combinations for long term storage: 1) cool & dry: 50-60˚F and 60% relative humidity; 2) cold and dry: 32-40˚F and 65% relative humidity; and 3) cold and moist: 32-40˚F and 95% relative humidity.

Storage Solutions

Some simple storage solutions include an outdoor pit such as a barrel buried halfway into the ground at an angle. If the pit is lined, this will protect the produce from water and rodents. Loosely cover the barrel-not airtight-then cover with a deep layer of straw (1 to 3 feet) followed by a layer of soil. Place a board against the side of the pit where the opening of the barrel faces.

turnips

Turnips

A storage mound is used where water is a problem, or short-term storage in mild temperatures. Place a layer of straw about 3 inches thick on the ground, then place the vegetables on the straw. Cover the mound of vegetables with a thick layer of straw followed by a layer of soil. Dig a drainage trench around the mound.

There are several plans for incorporating a root cellar into an existing basement, but the main idea is to provide an insulated area where temperatures can be kept between 33 and 45 degrees. An Internet search on “root cellars” will provide many ideas and instructions.

Enjoying rich, flavorful rutabagas and parsnips, or creamy home-grown potatoes in the dead of winter is one of the delights of being a gardener. Plan to include some of these root vegetables in your next season.



 

Other Excellent Sources of Information

http://www.ext.colostate.edu
http://www.harvestwizard.com/root_vegetables
http://www.gardening.cornell.edu/factsheets/vegetables/storage.pdf

Images from Wikimedia Commons, by GNU License or in public domain; carrots by Toni Leland


  About Toni Leland  
Toni LelandToni Leland has been writing for over 20 years. As a spokesman for the Ohio State University Master Gardener program, she has written a biweekly newspaper column and is the editor of the Muskingum County MG newsletter, Connections; she currently writes for GRIT, Over the Back Fence, and Country Living magazines. She has been a gardener all her life, working soil all over the world. In her day job, she scripts and produces educational DVDs about caring for Miniature Horses, writes and edits books about them, and has published five novels.

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Discussion about this article:
SubjectTopic StarterRepliesViewsLast Post
stored away for the winter 3pmp 2 10 Jan 4, 2012 6:41 PM
sunchokes blukila 0 3 Jan 2, 2012 12:07 PM
confused on turnips Liquidambar2 2 8 Dec 28, 2011 9:22 PM
cut vines gives more time to harvest Liquidambar2 0 4 Dec 28, 2011 3:55 PM
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