This past week I was struggling with temperatures, with the highest reaching 86F. This was only for a few days. Prior to the heat, I believed I gave too much nitrogen. The leaves appeared dark on the edges, a few burnt tips, and stunted growth. Now, with the incidence of lower leave yellowing I am puzzled, because that wouldn’t be N tox, would it? Water is PHed regularly to 6.2-6.4 usually. I’m thinking maybe I misinterpreted heat stress for N tox and now its N deficient. I apologize if this is in the wrong section. I am still trying to find my way around the forums.