My Friends has to apple tree one of then as had stun growth and the leaves are on the sad side !!
any idea what is wrong ??
Location: SE Pennsylvania, USA
posted 3 years ago
Looks to me like aphids. I think I see exoskeletons and the black stuff on the leaves is aphid droppings. A severe case can cause leaf curl and stunting like that. Plenty of home remedies (soapy water, blast it with a hose, etc) will take care of it or neem oil works great and is natural.