MickTheBrag said:could be ozone "air pollution" just hope it dont get worse. or if your organic matter "nutes"is'nt fully rotted it'l burn your plants.
Kal-El said:Calcium deficiancy.
teruso said:Not true... I recently did a test to see if cannabis can suffer from an organic fertillizer burn, I put fresh chicken manure (the strongest stuff there is) around the base of the plant and it was fine.