Why is My Street/Sidewalk/Car So Sticky?

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Pests in the Home and Garden:


Useful Links and Resources

Contact Us!

Questions about the
IPM Program should be directed to the Parks & General Services Department,
(530) 757-5656, or to pgsweb@cityofdavis.org.

hackberry tree

As summer approaches so do the Wooly Aphid problems on the Chinese Hackberry trees.

This aphid infests hackberry, especially Chinese hackberry (Celtis sinensis), throughout the state. This aphid was accidentally introduced into the United States in the late 1990s and also occurs from Florida to Texas and northward to at least Tennessee. Its copious honeydew excretions create a sticky mess and promote the growth of blackish sooty mold on leaves and surfaces beneath infested trees.

wooly aphid on a dime

The following link is to a UCIPM Pest Notes article containing information about the Wooly Hackberry Aphid, its life cycle, and control.

Hackberry Woolly Aphid Publication This document is in PDF Format 300Kbytes

 

 

 

 

 

 

 

 

 

 

 

 


City of Davis, California
23 Russell Blvd.
Davis, Ca. 95616