"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 .