What Causes Aphids To Attack A Plant

Question From: Vancouver, British Columbia, Canada
Q: what causes aphids to attack a plant. Are aphids air borne?

A: Aphids are also called plant lice. You will often bring the eggs into the garden on new plants. They prefer the lush leaves of plants fertilized with lots of nitrogen. They do not fly, but are carried on the wind. Best And Happy Yardening, Nancy