So I have my newly planted plants, one is about 3 feet tall crawling up the twine the other has shoots just popping the surface right now. Temp is supposed to get down in the low 30's here tonight do I need to cover these up, how will they tolerate the cold and what about the wet soil freezing and harm to the roots with that? The temps are back up in the 60's and sunny Tomm and for the weekend so this will just be a one night thing.