GG does it up right.
I can tell it's getting chilly up her way by the attire--first pic I've seen all year showing a hoodie instead of t-shirt and shorts!
OP: I think your plants are just fine with temps. in the 50s at night. We're just starting to see some high forties occasionally here, I'm about to put an extra-thick blanket of mulch down to help insulate the roots before things dip down much further.