Really, if they are milky you can take them out. I'm expecting frost Wednesday morning so I'm harvesting and trying to move some under a shed. I would cover those that you want to go a little longer. A sheet is usually enough because you still have warm ground temps. Depends how cold. Upper 30s no problem. I will make my call Tuesday as to what I'm going to do.
Damn whats up with the weather? Our lowest next week is predicted to be 35° and I am in Maine. We do have rain perdicted and at 35 degrees that may be snow by the time it hits the ground. I think I am going to build a lean too shelter next to the exhaust outlet from my grow room.
"Periwinkle Pie" that's too frickin funny !!!! SBR knows what he's talkin about. For me, I kinda assess each plant that's still growin when temps go low. Make sure to take advantage of these last few sunny days !!! Some get chopped and some I try to keep growin. Like SBR said, you can cover them up with all sorts of stuff to keep them from frost damage. For the plants health, there's a BIG difference between 35 degrees and 25 degrees. Good luck .