Birds & Blooms reader Ken Kuhnen of Machesney Park, Illinois, wrote in asking, “My lilac tree ... Dark Purple from Proven Winners. Next, learn when to prune hydrangeas. Why Is My Lilac Bush ...

When it comes to considering trees and shrubs as a hummingbird garden addition, one that offers an abundance of purple blooms that these little birds love to frequent is the dwarf Korean lilac.