Visual reference slot
Needed asset: Necrosis Evaluation Card comparing tip burn, margin burn, spotting, lesions, halos, dry tissue, and stopped vs spreading damage.
THC Living Plant Atlas · Leaf Module
Necrosis is dead plant tissue. Brown tips, burnt margins, spots, and lesions show damage, but not one guaranteed cause.
Needed asset: Necrosis Evaluation Card comparing tip burn, margin burn, spotting, lesions, halos, dry tissue, and stopped vs spreading damage.
Classify necrosis pattern, confirm whether it is spreading, compare old vs new growth, then check EC, pH, VPD, light, water status, pests, and recent sprays.