Invasive species

What’s the Big Deal?  The invasive glassy-winged sharpshooter (GWSS), Homalodisca vitripennis, is a large (~0.5 inch long) leafhopper that feeds on plant fluids in the xylem, a plant’s water-conducting tissue. The glassy-winged sharpshooter was first found in California in 1990 after it was…

Black fig fly, now in the Bay Area.  A new invasive pest, the black fig fly, Silba adipata, has been found in Alameda County.  This pest exclusively feeds and reproduces on figs, and California produces almost 100% of the U.S. fig crop. The black fig fly (BFF) causes major fruit drop, a…

Learn how the Mediterranean Fruit Fly affects Alameda County crops and what you can do to prevent invasive pests from spreading.

The brown marmorated stink bug is an invasive pest in California, damaging gardens, crops, and invading homes. Learn how to identify and manage it.

Protect citrus trees from the invasive Asian Citrus Psyllid. Learn how you can help prevent the spread of this harmful pest.

Learn how to identify and manage the invasive Tree of Heaven with guidance from UC Master Gardeners of Alameda County. Protect your landscape today!