How do I over-winter my mint?
I live in zone 6b and have:
Spearmint (not in pic)
My question is: Can these plants survive winter? While I'm quite certain peppermint and spearmint can, I question the other varieties. They all seem to be rated at least a zone 5 or lower, but that is often under optimal standards and these are first year plants.
I'd rather not bring them in if at all possible as the mint plant I brought indoors last year had severely slow growth upon bringing them back outside (in pic bottom right).
I'm also wondering how much and when to harvest the last crop before winter, or if I should just leave it as is.