If you have eucalyptus trees, you might have noticed white, crusty growth on the leaves. Or maybe you saw a sticky, blackened mess of fallen leaves under a eucalyptus tree. These are signs of the redgum lerp psyllid, one of the most common psyllid pests that damages eucalyptus trees in California.
The adult psyllid is very small and as nymphs, they are concealed under a waxy cap, or lerp. As they feed, they excrete honeydew which can lead to the growth of black sooty mold, the source of those sticky leaves under the tree.
Although under biological control in coastal areas, this pest is still a problem under some growing conditions and on specific Eucalyptus species. Cultural practices to manage...
- Author: Belinda J. Messenger-Sikes
- Editor: Karey Windbiel-Rojas
Pampasgrass and jubatagrass facts
Pampasgrass (Cortaderia selloana) is a common ornamental landscape plant that readily naturalizes throughout California's coastal areas and some interior...
Due to unforeseen circumstances, the webinar scheduled for April 21 has been canceled and will be rescheduled for another date. We apologize for the inconvenience.
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What are you doing the third Thursday of each month at noon? Joining UC IPM for our monthly webinar, we hope!
This Thursday, come and learn about invasive species in California and what you can do to combat them! In Part 2 of this topic, Karey Windbiel-Rojas from the UC Statewide IPM Program will continue sharing information on new pests of concern or pests we are trying to keep out of California.
Can't make it? That's ok-- all the UC IPM webinars are recorded and later posted on UC IPM's YouTube channel....
Every year, invasive pests cause billions of dollars of damage to California agricultural systems and natural areas. These pests can be weeds, plant pathogens, insects, vertebrates, shellfish and other aquatic species. There are many invasive species of concern in our state including yellow starthistle, brown marmorated stink bug, and Asian Citrus Psyllid. Additionally, agencies such as the California Department of Food and Agriculture monitor the status of potential pests that may be introduced to...
The black fig fly is a new invasive species recently found in Southern California. It has been found in fig orchards in Los Angeles, Orange, Riverside, Santa Barbara, San Bernardino, San Diego, and Ventura counties. This small insect attacks only figs and prefers unripe or unpollinated fruit. The adult female lays eggs inside the fig (Figure 1). The larvae that hatch inside the fig damage the fruit by feeding on it (Figure 2). The larvae will make their way out of the fruit, drop to the soil and pupate. Some may pupate inside the fig.
What can you do?
To prevent the spread of this pest, don't move figs out of the counties known to have the black fig...
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