It may be a zinc deficiency based on those leaves twisting in right angles, and zinc being immobile would explain why the older growth is undaunted. sometimes high ph can impede zinc uptake. see what the concenses is.
snow owl Reviewed by snow owl on . rusty leafs? pictures! hello folks,anyone noticed this before? growroom temps have been high last few days in the uk you rekon it could be heat stress? s.e.t :confused: Rating: 5