Southeastern Ornamental Horticulture Production and Integrated Pest Management

News alerts and tips from Southeastern universities.

Cottony maple leaf scale eggs hatching

Cottony Maple Leaf Scale is one of several cottony scales in the genus Pulvinaria.  You can find these now on their most common hosts: maple and dogwood.  Stand under a tree and look up and you will see cottony masses about the size of a cotton swap stuck to the bottom of leaves.  These are the egg masses. They each contain many hundred eggs that are hatching as we speak.  The crawlers will settle and feed on the leaves all summer then migrate back to branches in fall before leaf-drop. For more pest updates follow @OrnaPests on Twitter or keep an eye on the ecoipm.com blog from North Carolina State University.

Looking up at the bottom of red maple leaves notice the many white cottony egg masses. Photo: S.D. Frank

Looking up at the bottom of red maple leaves notice the many white cottony egg masses. Photo: S.D. Frank 

 

Cottony maple leaf scale ovisac. Photo: S.D. Frank

Cottony maple leaf scale ovisac. Photo: S.D. Frank