I have a rather big bird's nest fern that I have had for 5 to 7 yrs. It has big plastic like leaves but they are not a nice green - they are almost grey like. Maybe I should take the granular fertilizer off the surface that surrounds the plant. It isn't in direct light at all. What is the problem, please?
On another subject, I have a big infestation of white flies. I have sprayed neem oil probably 10 times in the past 3 weeks with hardly any results. What do you all suggest?