Its possible to grow in 100 degree temps. Be real clean, water properly and keep everything in check. If this is your first grow, your chances for failure are way up. An experienced grower should be able to handle these temperatures. Spider mites will take over fast at these temps....humidity will rise if you over water, inviting powdery mildew....in addition to your 100 degree garage, the light will also increase temperatures. Plants must be checked on and probably watered every day depending on moisture content in soil.I am setting up my grow area in a Texas garage. Temp might reach 100 degrees at times. A friend told me I would have to move it inside to avoid mildew.
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