If it's yellowing and necrosis from too little calcium, adding magnesium will not help, and could make the problem worse.
stinkyattic Reviewed by stinkyattic on . why R this plants leafs yellowing?.... what can I do to make the yellowing stop so the new growth don't turn yellow. and is she gunna make till harvest. it'll be a 12-14 week flowering cycle cuz she is a sativa. so what can I give her to help the yellowing? Rating: 5