Pests

The black stuff on your leaves is likely sooty moldThe black stuff on your leaves is probably sooty mold, a fungal disease growing on plants and other surfaces, and it is often seen in the spring and summer. The leaves or stems have a black coating that looks like soot. If you look closely, it is growing…

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

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

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

Learn to identify and manage common tomato problems in Alameda County. Expert solutions for blight, pests, fruit issues, and plant diseases.

Master summer garden pests with safe, organic solutions. Expert guide covers aphids, caterpillars, earwigs & more.