Not to worry. Don't you guys know where this stuff grows originally? Even if you don't, consider that I grow outdoors in central California, and most days in the summer are over 90 degrees, and we often get spells of up to 3 weeks of nothing but temps OVER 102 degrees! The only thing I do to protect my plants from the heat is to put ply wood shades around the pots to keep the sun from raising the soil temp to over 100 degrees, but even without the sun shining on them, when it's over 100 degrees all day long, the soil still rises to close to 90 degrees, or higher, and I've yet to have a root system problem. The first year I grew, I didn't even know enough to shade the pots, and they still grew well. This summer, as an experiment, I kept a male in the small 5 Gal pot I started it in, and I never bothered to shade the pot all summer long. Too small of a pot that was also black and got too hot to touch on the really hot days, yet it grew to over 7 feet in that little pot before I removed it at the end of July, as it was flowering already, and I had no females ready to pollenate yet. I had another male for that purpose, anyway. Heat isn't that big of an issue with most varieties.