[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Black java fern leaves



In my limited experience the black spots are caused by a nutrient 
deficiency. Some people have suggested iron as the culprit but in my case 
adding iron did not solve the problem. It was not till I started adding 
potassium and nitrates that the black spots stopped forming on new 
leaves... this suggests that a wide range of nutrients could cause these 
spots when deficient.

dave.