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

Posts Tagged: invasive

DRAAWP in on New Zealand

A view of Lake Wakatipu and Queenstown, the venue for the Symposium.

The Delta Region Areawide Aquatic Weed Project (DRAAWP) was represented by two presentations to the 15th International Symposium of Aquatic Plants, held February 18-23 2018 in Queenstown, New Zealand. “Quantitative techniques for assessing changes...

A view of Lake Wakatipu and Queenstown, the venue for the Symposium.
A view of Lake Wakatipu and Queenstown, the venue for the Symposium.

A view of Lake Wakatipu and Queenstown, the venue for the Symposium.

Posted on Wednesday, March 7, 2018 at 12:25 PM
Tags: aquatic plants (25), aquatic weeds (52), invasive (46)

Keep your eyes out for the invasive Saharan mustard

Saharan Mustard. Photo: © 2005 Michelle Cloud-Hughes

Saharan mustard is originally from the Mediterranean. It was introduced to California where it became a weed, particularly in the dryer parts of the state. Livestock can be poisoned by Saharan mustard if they are kept in fields that have little else...

Saharan Mustard Map from CalFlora
Saharan Mustard Map from CalFlora

Saharan Mustard Map from CalFlora

Posted on Wednesday, February 14, 2018 at 10:00 AM
Tags: fire (3), invasive (46), poison (6), toxicity (1), weed (25)

Crayfish invasion

Marbled crayfish

This article from Science discusses a new species of crayfish (not just recently discovered, but an actual new species) that is self-cloning and highly invasive. It's not a weed, but it acts like one...  

Marbled crayfish
Marbled crayfish

Marbled crayfish

Posted on Tuesday, February 6, 2018 at 9:13 AM

They don't know they are weeds

As weed practitioners and researchers we work in a field of ‘us vs. them.' There are the plants we want and those we don't. Good weed management can help to ensure a profitable harvest, too many weeds can cause poor establishment in a native plant...

Posted on Tuesday, September 26, 2017 at 11:09 AM
Tags: anger (1), bias (1), invasive (46), jargon (1)

Citrus Greening Disease Quarantine Extended

Leaf yellowing in one-quarter of citrus tree canopy due to huanglongbing. (M.E. Rogers)

Alert from CDFA Plant Health and Prevention Services The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have established a 94-square mile quarantine in portions of Riverside and San...

Posted on Wednesday, August 30, 2017 at 3:38 PM
Tags: Asian citrus psylld (14), disease (32), greening (3), huanglongbing (34), invasive (46), pest (75), UC IPM (225)

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