UCCE Master Gardeners of San Joaquin County
University of California
UCCE Master Gardeners of San Joaquin County

Posts Tagged: walnut twig

Invasive Pest Spotlight: Ambrosia Beetles

Male (left) and female walnut twig beetles. [L. Strand]

Today's post for National Invasive Species Week highlights two ambrosia beetles that are detrimental to certain trees. Ambrosia beetles are highly specialized beetles that excavate tunnels in usually weakened or dead trees and cultivate fungal gardens,...

Posted on Wednesday, February 24, 2016 at 10:36 AM
Tags: ambrosia (1), beetles (13), borer (4), fungus (4), fusarium (4), invasive species week (5), pest (75), polyphagous (4), PSHB (3), thousand cankers disease (4), UC IPM (225), walnut twig (2)

Exotic Pests Invade California Landscapes

Bagrada bug nymphs and adults.

[From the April 2014 issue of the UC IPM Green Bulletin newsletter] Over the last several decades dozens of exotic pests have invaded California landscapes, causing at least temporary havoc and sometimes severely affecting the aesthetic value of plants...

Posted on Monday, April 14, 2014 at 4:23 PM
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