How hot can it be?

I want to grow a plant in my attic but it gets hot up there. How hot can it be and my plant still survive?

anything above 90deg is pushing it and can harm your plants. i think the optimal range is somewhere between 80-90

ya everyone says in the 90's is too hot, mine is at like 94 alot and it really healthy but who knows

Personally, I think your plant will adapt to its surrounding, some strains like the high heat such as Durban poison and Kaya. Do some research on seeds and order one that survives in high temps or low.


Personally I grew a fat ass plant with my temps ranging from 80-91

About 90 is the top unless you have CO2 enrichment when you can go to about 100. Remember, though, that spider mites and other nasties love hot arid places and reproduce faster with higher temps. I keep my garden around 75-78 with rh 45-55%, and I've had no problems (yet) with pests or mold and the plants are healthy and happy. If you must grow in an attic, invest in an exhaust fan that will evacuate the area in under 5 min to help keep heat under control. Adding a charcoal filter to the exhaust system (before the fan) makes it serve double duty by keeping the skunk at bay.
Good luck!