Author Topic: In Ground -Biennial Roots- Harsh Winters  (Read 72 times)

Kai Duby

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In Ground -Biennial Roots- Harsh Winters
« on: 2019-02-12, 07:36:21 PM »
This is my first year attempting to save seed of biennial root crops by storing them directly in the ground over the winter. I know that a lot of seed growers hand books say that this is not a good idea but I have also met a lot of gardeners that have been able to keep the roots and get seed just fine in the ground.

By harsh winters I mean either extreme, abrupt changes in temperature often to below freezing for short periods of time or extended, months long freezing temperatures. The moisture levels in soil going into winter seems like a determining factor as well.

I've met people who say that they have overwintered carrots in frozen soil.
I have personally overwintered rutabagas through a harsh winter under some snow though quite exposed on a southerly slope.

This year I am attempting carrots, daikon, and rutabaga directly in the ground. I planted them in furrows after selecting them from the market bunches and when frost was imminent I covered them with a good 8-12'' of straw.

I also put a lot of the roots in totes filled with sawdust, but given my limited space, I buried the boxes in heaps of old hay in an old excavated hole.

Just wondering if anyone else has successfully overwinter the common biennial root crops through harsh winters.
San Luis Valley, CO. >7,500'. Zone3-4. Low rainfall: 8-10''. Low Humidity. High winds.

Doro

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Re: In Ground -Biennial Roots- Harsh Winters
« Reply #1 on: 2019-02-13, 06:12:08 AM »
We get hard bare frosts with warm spells inbetween during early winter.
Hip high snow and hard frost during mid winter.
And icy conditions with hard frosts and random warm spells inbetween during late winter.
 :P this kills pretty much anything.

Parsnip is the only root crop that survives winters for me. Not all varieties, but I got a reliable grex going since ~10 years.
I'm also going to try salsify and black salsify this year. They should survive too, just have not tried yet. Hoping for the best ;)

Anything else has to be stored in a root cellar. Buckets of sandy soil work great to keep the roots from loosing moisture. Some varieties will start regrowing long before I can plant them out, but usually that's no problem and they still survive and make seeds.

William S.

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Re: In Ground -Biennial Roots- Harsh Winters
« Reply #2 on: 2019-02-13, 08:00:50 AM »
Parsnips and Turnips survive winters for me and have pretty long term. Also carrots and onions and potatoes so far.

Going to try leeks and tragopogon salsify this year for the first time.
Western Montana garden, glacial lake Missoula sediment lacustrian clay mollisoil sometimes with added sand in places. Zone 6A

Joseph Lofthouse

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Re: In Ground -Biennial Roots- Harsh Winters
« Reply #3 on: 2019-02-13, 08:16:39 AM »

Parsnips and young turnips are reliably winter hardy for me.

Beets haven't been winter hardy.

Small carrots sometimes survive the winter. Larger carrots haven't. Two generations of carrots have survived the winter in ground now, so it might be a suitable time to try overwintering larger carrots in ground again.

Onions are hit and miss for me, highly dependent on the variety.

Potatoes survive some years, but not reliably.

My most reliable way to store roots overwinter, is in buckets of sand/soil/choir in the pantry, which stays a bit above freezing.

Kai Duby

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Re: In Ground -Biennial Roots- Harsh Winters
« Reply #4 on: 2019-02-13, 06:22:21 PM »
So certain varieties of parsnip and turnip sound like a sure thing. Wild salsify is certainly hardy so I would suspect some domesticates would be as well.

Joseph: It's interesting that you mention your carrots because I grew some of your carrot mix a few years back and they survived the winter quite well though, for various reasons, I wasn't able to save seed from them. The biggest root was about a thumb and a half in width so not too small considering they weren't ever irrigated! I didn't have any irrigation available but your carrots just came up with the spring rains and survived on about 20-25'' of rain through the season, which I was pretty impressed with! This was also in very heavy clay.

I wonder why it is that small carrots can make it and large ones can't. Could it be because of the roots water content?

I replanted the most carrots this last fall so I'm eager to see if they survived. I don't have much hope for the daikon but I figured I'd try since I had so many.

I've heard that the reason carrots become sweeter after a frost is because they are making "antifreeze" sugars in response to the cold. Perhaps this would be a good trait to focus on for a more cold hardy carrot.
San Luis Valley, CO. >7,500'. Zone3-4. Low rainfall: 8-10''. Low Humidity. High winds.