News Flash

Wright County News

Posted on: October 28, 2020

U of M Extension Offer Tips on Storing Root Vegetables

By Katie Drewitz and Adam Austing, University of Minnesota Extension Educators

Since we got snow last week it’s pretty safe to say that the growing season has come to an end. With canning supplies being in short supply this year the question on how to properly store this year’s crops may be top of mind for many. The length of time and efforts to store these vegetables varies and it is important to keep in mind only healthy, disease free produce should be stored.

Being able to find the perfect conditions for optimal storage is difficult. Basements, root cellars, refrigerators, garages and sheds are all locations people attempt to store produce. To ensure the longest shelf-life of our produce, here is some helpful information.

The first storage category is cold, moist storage. Cold moist storage is defined as 32-40 degrees, 90-95 percent relative humidity. Beets will store up to five months, be sure to store without tops. Carrots will store up to eight months and should be stored without tops. Parsnips will store up to four months, do not wax, and they have best sweetness after two-week storage at 32 degrees. Potato will store up to six months, and should be cured at 50 to 60 degrees or for 14 days before storage. Rutabaga will store up to four months, do not wax, and will give off odors.

Turnips will store up to four months, can be waxed, and will give off odors. Cole Crops should also be stored in cold, moist storage. Broccoli will store up to two weeks. Cabbage will store up to five months, but it is not recommended to store in the basement because smell will spread throughout the house. Cauliflower will store up to three weeks. Kohlrabi will store up to two months and should be stored without tops.

The next storage category is cool, dry storage which is defined as 50-60 degrees and 60 percent relative humidity. Pumpkins will store up to two months and are very sensitive to temperatures below 45 degrees. Winter squash will store for two to six months depending on variety. Field curing is the best option.

Finally, cold, dry storage which is 32-40 degrees and 65 percent relative humidity. Onions cure at room temperature for two to four weeks before storage. Onions should not be stored near apples or potatoes as the apples and potatoes will absorb the onion flavor.

In general store root crops in layers of moist sand, peat or sphagnum moss or in a plastic perforated bag. You can make your own by using a paper punch or a sharp object like a pen or knife and punching or slicing a hole every six inches. This helps provide essential air movement to prevent condensation and helps prevent shriveling and prolongs shelf-life. Of course, it is then important to ensure there is good ventilation and the produce is stored in an area where it will not sustain rodent damage.

To obtain ideal temperatures, you may want to consider using straw, hay or wood shavings to insulate the bags of produce in areas where the temperatures would dip too low and cause loss. In general, expect the shelf-life to be shortened by 25 percent for every 10 degree increase in temperature.

Finally, be sure to check on your produce to ensure they haven’t started to mold or go bad. Discard any that show signs before it impacts others. For a more complete list on storing vegetables, visit and search “storing vegetables”. You can also reach out to your Local Extension Educator. Residents in Wright County can call Adam Austing at (320) 249-5929 for additional information.

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