Hello everyone,
I m looking for some help of my delenatii.
It has a strange brown spot developed on the leaf about few days ago. And the spot seems like spreading.
I had fertilised the delenatii the day before the spot developed, with around 0.3 ml 2-3.5-2 fertiliser mix with around 350 ml water (a starxxxxx tall size ice coffee cup)
Is it caused by salt or sun burn? should i cut off the brown area?
Thank you very much!!
two days after, the spot looks bigger
