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?
"Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning." —Albert Einstein
Rocket Mass Heater Plans: Annex 6" L-shaped Bench by Ernie and Erica