Growing five plants of various strains (already harvested three auto-flower, with nice results). Four of these are in five gallon containers, and one is in the ground. All are in a greenhouse, and I am running a dehumidifier (see my previous thread on bud rot) and an automatic fan set to come on at about 85F.
The plant in the ground is amazing–the stalk is nearing 2" thick, and it’s literally growing out the greenhouse roof. The four in the five gallon buckets are nice and tall, 1" thick, and fairly full, but not as healthy as the one in the ground.
I apologize that I don’t have photos, but the one in the ground is nice dark green, really bushy, and doing great. The ones in the buckets are more pale green, and over the past 3-4 weeks, they have been yellowing from the bottom up. The leaves get pale, then yellow (sometimes with brown spots), then die and fall off.
For fertilizer, I started with ILGM stuff, and now that I ran out I use a balanced organic fertilizer, general garden stuff (Dr. Earth). I also have a bloom fertilizer, (low N, higher P, K), but not using it yet.
When I suspected water was the problem (because buckets get very dry quickly), I moved the buckets into a large watering trough, so that when I water, they drain out the holes in the bottom and sides and stand in water for a day or two and stay moist longer. I do have to water every 3-4 days.
I just reapplied fertilizer again a few days ago, and it’s too soon to tell if this was the cause. Last fertilizer was probably 5-7 weeks ago, applied on the surface of the dirt and watered in (it’s pellet, so breaks down slowly each watering).
I am really torn on this one. My instinct is that it’s a N deficiency, but wonder if it could be that the fertilizer is too hot instead? Should I take any steps to remedy this, other than just fertilizing and watering?
Thanks for any help, and talk soon.