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Last year, after grow season ends, I found some tubers which were not harvested, after 3-4 weeks, during plowing, middle of November, after first frost and everything harvested in my garden. Found tubers were in very good condition.

As I am getting big troubles to store them, I wonder if I can leave them not harvested in the ground? Leaves will be destroyed by frost, but if the ground will not be frozen, will they survive longer, like 2-3 months in the ground?

I'm expecting only small frost, otherwise I am able to prevent soil from freeze at the depth where tubers are located.

What do you think?

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Assuming you don't have subsurface vermin issues (in-ground is the way I learned to store carrots - but our carrots and beets were both savaged by burrowers this year before harvest, so storing them there was not an option) That can work.

Variations (without getting into root cellars...) range from leaving them where they are, leaving them where they are with straw or something piled on top to minimize frost penetration, or dig up and rebury in a (possibly smaller, possibly wire-mesh protected from vermin) location, with or without additional frost protection as required.

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  • I'm pretty sure I am able to protect them from frost in the ground. I can put bunch of soil above and even cover it with leaves or straw. No way any frost is going to penetrate it deep enough to freeze roots leaved where they are. However, expected temperature inside is still quite low, like 2-4 °C and also, soil is very wet Oct 19, 2022 at 9:13
  • From what I saw till now. After one week purple variety looks to be decayed in ground. But white flesh and skin ones are still good. It seems it highly depends from variety Oct 24, 2022 at 8:22
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To answer my question. Result: failure. Roots destroyed completly. Nothing left.

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