FOR YOUR TREE TRIMMING AND REMOVAL NEEDS, VISIT OUR SISTER COMPANY ASPEN TREE EXPERTS

Magnolia Scale

The magnolia scale, about 1/2 inch in diameter, is a very large soft scale that feeds on magnolias. Mature females, present in July and August, are pink-orange to brown bumps, often with a white waxy powder.

Magnolia scales are sap feeders that excrete large volumes of a sugar-rich liquid waste called “honeydew”. Foliage and branches may be shiny with these deposits or blackened by the growth of sooty mold fungus. Honeydew also can attracts many flies, bees, and other insects. Heavily infested trees can suffer branch dieback or even be killed by this insect. 

Scale control can be challenging and may need to be repeated over several seasons. Proper timing of insecticide applications is a major key to success. Applications must target newly hatched scale crawlers. They are very susceptible to control measures while moving over plant surfaces to find a feeding spot. Once settled, they begin to secrete a waxy covering that shields them from sprays.