Q.Boston fern
The new growth on my fern has what looks like white mildew covering it. Can you tell me what to do? Thank you
Without seeing the plant or a few more details it is a bit difficult to say.
New growth can sometimes have a lighter, whitish or light grey fuzzy appearance.
If it is a fungus or insect issue you can easily and safely treat the plant with Neem Oil. Neem Oil is organic and safe for people and pets.
Neem Oil works as both an insecticide and fungicide.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm