Hi i am wondering if i need to put ice cubes on my soon to have vft, sarrs, darlingtonia ,dews , and pings in the summer [the temperates] the temps last year in LA were 100+! in the summer. any ideas that i can use, i have a red tub un used if you need more info. please help me! My purpurea is outside but is in dormancy, when it is growing again it might heat up like my vfts last year.