Brown edges, could be heat, but most likly it's being over fed, that will also turn the edges brown in my opinion, if you started with good soil and added you nutes at the beginning, you shouldnt be feeding for around three weeks or so. Feed fresh water for a few days and see what happens,
crazyhorse Reviewed by crazyhorse on . Will heat cause brown edges? I am in the second week of vegging one plant. Everything was beautiful last night, but when I woke up this morning the edges of a few fan leaves were brown. It was actually pretty hot in there, so I think my lamps were a little too close. I raised them, hopefully this helps. Just wanted somebody to confirm that heat is the problem and that it's not a problem with soil, etc... Rating: 5