If the blue is Caerulea, it will do okay around 35, it is the most cold hardy. Maypop may lose leaves around 32, would wait a bit. I always worry about temperatures below 35, I grow all of those in my yard and it also depends on the maturity of the plant. New growth is also affected by cold.

Looks like it will be too cold still all next week -- usually is until almost May, but it seems like we might warm up a bit early. Thanks, I will be patient! The blue one would be Caerulea, the purple one edulis or incarnate (maypop), -- I just don't remember which or what the other one is, so I guess I will find out if/when they bloom!