At what temperature is detrimental to dunstan chestnut

Angus 1895

5 year old buck +
I am thinking of putting my dunstan out in 3.5 gallon insulated pots

they don’t seem to produce much leaf just stem.

so I assume they won’t be in peril in a cold snap.

I live in zone 5

but 5000 feet elevation

thanks

johnn
 
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