Do you have any close-ups of these?, I'm curious as to the strain. And how large are these pots?, they have to be larger than 5 gallon capacity to support this size. They'll survive a frost or 2, in fact it actually stresses them to induce more resin. But keep the roots above 40F, use an old oil dipstick type heater if need be(the ones for autos). Can you run an extension cord?

dipstick heaters

These do work to maintain soil temp, but placement has to be done properly.

Quote Originally Posted by Steelwool
I can't cover them. It would bring too much attention and they are way too big. They are 10 feet to 12 feet tall & 6 feet wide, thick woody stocks, and healthy. I have at least four more weeks to go and they are predicting 32 degree nights the next 2 nights. WHAT CAN I DO? I'm planing on insulating the pots with bubble wrap, duct tape, and towels so the roots stay warm. Will that be enough?