Cannabis Grow Problems — Page 2
Threads 21–29 of 29, newest first.
Nutrient burn or deficiency? Can't tell the difference
Seeing brown spots AND yellow tips at the same time. Some leaves have burnt tips (nutrient burn?) but others are yellowing from the bottom (deficiency?). How can both happen at…
Calcium deficiency in coco — brown spots everywhere
Running coco and getting brown rust-colored spots all over mid-canopy leaves. Looks like calcium deficiency from what I've googled. Already adding CalMag at 2ml/gallon. Not enough?
Light burn vs heat stress — how to tell the difference?
Top leaves are yellowing/bleaching but the plant isn't wilting or drooping. Tent temp is 78°F which seems fine. Light is a 300W LED at 12 inches. Is this light burn or something…
Hermaphrodite plant found — what do I do?
Found banana-shaped growths (nanners) on one of my 4 plants in week 6 of flower. The others look fine. Do I remove just the bananas? Remove the whole plant? Will it pollinate the…
Leaves clawing downward — nitrogen toxicity?
My fan leaves are curling downward like eagle claws. The leaves are also very dark green, almost black-green. Currently feeding full strength General Hydroponics Flora series. Is…
Plant smells like hay after drying — did I ruin it?
Dried my harvest for 5 days (stems snapped) and now it smells like hay/grass instead of cannabis. What happened? The buds looked and smelled great on the plant. Can curing fix…
Stunted autoflower — week 5 and only 6 inches tall
My autoflower is 5 weeks old but looks like a 2-week-old plant. Only about 6 inches tall with minimal branching. Already showing pre-flowers. Did I stunt it? What went wrong?
Foxtailing buds — is this bad?
My buds are growing weird spire-like towers from the top of the colas. Some people say this is "foxtailing." Is this genetic or environmental? Does it affect potency?
PH keeps dropping in my DWC reservoir
Running DWC hydro and my pH drops from 5.8 to 4.5 within 24 hours. Constantly adjusting. Using General Hydro pH Up but it won't stay. What's causing this?