UCCE Sonoma County
University of California
UCCE Sonoma County

Posts Tagged: Aquatic Plants

Hydrilla eradicated in Shasta County

Occasional good news on the weed front... "SACRAMENTO — The California Department of Food and Agriculture (CDFA), working in cooperation with the Shasta County Agricultural Commissioner's office, has eradicated two hydrilla infestations within the cites of Redding and Anderson, ending a...

Posted on Wednesday, February 27, 2019 at 10:18 AM
Tags: aquatic (41), Aquatic Plants (25), aquatic weeds (49)

Growth potential of South American spongeplant at different temperatures

A new plant developing at the end of a stolon.

South American spongeplant (Limnobium laevigatum) is a free-floating, freshwater aquatic plant that has been introduced to the Sacramento-San Joaquin Delta. Spongeplant can propagate sexually through seed production and asexually through the development of stolons that produce new plants. This...

Posted on Wednesday, August 22, 2018 at 2:00 PM
Tags: Aquatic Plants (25), aquatic weeds (49), invasive (22)

Waterprimrose shows disturbance-related dispersal along the Russian River

Uruguay waterprimrose

It may be widely understood that most aquatic and wetland weeds are spread by water currents, but the patchwork of colonizing exotic plants can be puzzling. Why do weeds establish in some places but not others? Generally, the number of propagules (seeds or plant fragments) moving in a watershed is...

Uruguay waterprimrose
Uruguay waterprimrose

Posted on Monday, July 16, 2018 at 8:50 AM
Tags: aquatic (41), Aquatic Plants (25), aquatic weeds (49)

Looking for the right herbicide for Egeria

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

We are doing a trial of eleven aquatic herbicides for their potential to control Brazilian waterweed (Egeria densa). The active ingredients being tested are bispyribac sodium, carfentrazone, copper-ethylenediamine complex, diquat, dipotassium salt of endothall, the dimethylalkylamine salt of...

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.
Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

Posted on Friday, July 6, 2018 at 1:42 PM
Tags: aquatic (41), Aquatic Plants (25), aquatic weeds (49)
Focus Area Tags: Environment

The OTHER invasive elodea

Lagarosiphon NZ 2018

On a conference trip to New Zealand in 2018, I was able to finally meet the final member of the invasive Elodea family, or Hydrocharitaceae. In the United States, we already have the invasive hydrilla (Hydrilla verticillata from Asia) and Brazilian elodea (Egeria densa). Not to be undone, we have...

Lagarosiphon NZ 2018
Lagarosiphon NZ 2018

Posted on Monday, March 12, 2018 at 9:43 AM
Tags: aquatic (41), aquatic plants (25), aquatic weeds (49)

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