By Naxiketa
Himachal Pradesh,
India 
How 2 permanently get rid of this ashgrey insect.it overnightly regrows on leaf petioles as white powdery spots even after brush dusting
11 Apr, 2010
Answers
Previous question
It sounds like a type of aphid. Try spraying with a suitable insecticide or a soft soap spray.
15 Apr, 2010