new grower need harvest help

i have four aussie blue haze plants outside still in massachusetts. It has frosted pretty bad luike 4 times and we even got a little hale last night. The 10 day has lows in the 40s and like 6 of the days have rain. They look pretty close to done but i can tell they could use another week or two. Is it time to pull them or should i try to ride it out?

see what clour the pitsulls are if they r browny red then bring them down if they aint then leave them for a little wile longer