Wood Acres Tree Specialists MD, DC, VA
call for tree service-1-888-464-3926
10315 Kensington Parkway, Kensington MD 20895-3358
Leaf Notes Blog
Tree & shrub care services
General Tree Work:
Plant Health Care:

Azalea Bark Scale

United States National Collection of Scale Insects Photographs Archive, USDA Agricultural Research Service.bugwood.org/

Eriococcus azaleae (Comstock) - Adult(s) Since its discovery in 1881, the azalea bark scale has become recognized as a prominent pest of azaleas. Infested plants usually appear chlorotic and unthrifty. The bushes are often covered with sooty mold, a black fungus that grows in the honeydew excreted by the azalea bark scales as they feed. Eventually twigs may die back.

As the female azalea bark scale matures, it secretes white, waxy threads, which become felted or matted into a thick covering over its entire body. This covering is called the egg sac, where eggs are laid after mating. As the female lays eggs, its body shrivels gradually. A until the egg sac is almost completely filled with eggs. Eggs are laid in late April. They hatch in about 3 weeks. This new generation matures during the summer and produces eggs in September. Mature females tend to feed in crotches and on twigs. Adult males, two-winged and tiny, tend to feed on the leaves. Azalea bard scales overwinter as nymphs feeding on the bark.

Pro-active tree & shrub care
Insect & Tree Pest Index Tree & Shrub Disease Index Tree & Shrub Damage Index Monthly Plant Health Care Report
Tree & Shrub Care info
Maryland Aborist Association   Tree Care Association Accreditation   ISA Certified Master Arborist ISA Certified Arborist
Maryland Arborist
Tree Care Industry
International Society
of Arboriculture
Master Arboist
On Staff
Copyright © 2010-2017 Wood Acres Tree Specialists - All Rights Reserved