I have a small plastic covered greenhouse and have started some small seedling jujube and hardy kiwi. I want to wait until the end of next summer to plant in ground.
I made the 5 gallon buckets into an Air Prune design and am worried that during the real cold weather (low of 9F for 3 to 4 nights) the low temperature would kill the roots.
I came up with this solution (design attached). A vinyl sheet 4 sided box would be used to hold straw around the buckets over winter. Since it will lay directly on the ground (on ground cloth), I am hoping ground heat will help along with the straw insulation/heat.
I may also cover the top with frost cloth or bubble wrap (or both).
Please comment and let me know what you think. Should this work? Any improvements?
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