UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: invasive

Stinknet, an Emerging Invasive Weed

Stinknet plant. (Credit: Ron Vanderhoff)

I recently attended a Santa Ana River Orange County Weed Management Area (SAROCWMA) meeting and there was an opportunity for participants to update the group about new invasive plants as well as give an update on management of these and others. During...

Posted on Wednesday, August 8, 2018 at 11:00 PM
Tags: California (29), impact (1), invasive (46), noxious (2), pineapple weed (1), plant council (1), stinknet (1), UC IPM (225), weed (25), Wilen (11)
Focus Area Tags: Pest Management

New weed in California – African spiderflower (Cleome gynandra)

African spiderflower on fallow ground at the research farm

Dr. Mohsen Mesgaran, who joined the Weed Science Group this year as our weed ecophysiologist, found this plant growing on the research farm at UC Davis. African spiderflower is a summer annual broadleaf plant in the caper family (Cleomaceae), growing...

Nice-looking, diffuse flowering heads which give the plant its common name
Nice-looking, diffuse flowering heads which give the plant its common name

Nice-looking, diffuse flowering heads which give the plant its common name

A single floret showing elongated stamens and pistil
A single floret showing elongated stamens and pistil

A single floret showing elongated stamens and pistil

Posted on Friday, July 20, 2018 at 1:29 PM

Invasive Spotlight: Wrapping Up California Invasive Species Action Week

Huanglongbing, the disease carried by the Asian citrus psyllid, causes asymmetrical yellow mottling of leaves and odd shape and greening of fruit. (Credit: Dr. Susan E. Halbert)

This week, we put the spotlight on invasive species and how these non-native plants, animals, and pathogens damage California's economy and environment. You Can Make a Difference Shot hole borers and the diseases they carry, and Asian citrus psyllid...

Posted on Saturday, June 9, 2018 at 10:00 PM
Tags: action week (1), California (29), disease (32), exotic (8), invasive (46), Japanese dodder (1), plant (3), red imported fire ant (2), shot hole borer (1), species (4), species (4), UC IPM (225), wild pigs (3)
Focus Area Tags: Pest Management Yard & Garden

Invasive Spotlight: Japanese Dodder

Spaghettilike stems of Japanese dodder growing on a tree. (Credit: Vince Guise)

When people think of parasites, often what comes to mind are blood-sucking insects like bed bugs, head lice, and fleas or other bodily invaders on or in humans and other animals. But plants can have parasites too. Most of us are familiar with mistletoe...

Posted on Wednesday, June 6, 2018 at 10:00 PM
Tags: California (29), dodder (2), invasive (46), Japanese (3), mistletoe (3), parasitic plant (2), pest management (25), Pest Notes (58), UC IPM (225)
Focus Area Tags: Pest Management Yard & Garden

Invasive Spotlight: Asian Citrus Psyllid and Huanglongbing Disease

Oranges

As part of our coverage of California Invasive Species Action Week, today we focus on a pair of invasive species that “work” together: an insect called the Asian citrus psyllid and the plant disease it can spread, huanglongbing. Our...

Oranges
Oranges

Oranges

Posted on Sunday, June 3, 2018 at 11:02 PM
Tags: ACP (27), Asian citrus psyllid (35), citrus (30), disease (32), economic harm (1), HLB (23), huanglongbing (34), Invasive (46), pest (75), UC IPM (225)

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