The tiny Asian citrus psyllid (ACP) has the potential to wipe out the California citrus industry. It is a carrier of the deadly bacterial plant disease, Huanglongbing (HLB), which is also known as citrus greening disease. This disease is fatal to citrus trees.

The insect feeds on citrus leaves and stems. Unfortunately, ACP has already been found at several sites in California. It threatens not only the commercial citrus industry, but also the ability of California residents to grow citrus at their homes.

It can take years for the symptoms of HLB to appear. Inspection and elimination of ACP is our first line of defense. Signs of disease include: asymmetrical yellowing and splotching of leaves; new growth is misshapen and twisted; produces bitter, inedible, misshapen fruit.

To help stop the spread of this insect and disease: inspect trees monthly and whenever watering, spraying, pruning or tending to trees; plant only certified disease-free citrus trees from a reputable nursery; do not bring any plant material into California from other states or countries.

At the end of this post you will find a presentation from the Citrus Research Board, provides additional information and photos. Topics covered include: other plants that can be attacked by the psyllid; maps showing locations of pest and disease; ways that the pest moves around; what happens when ACP is detected; how an infestation affects commercial citrus orchards.

If you find the Asian citrus psyliid, call the CDFA hotline at 800.491.1899 right away.

To learn more about the Asian citrus psyllid and HLB disease, or to download printed materials in English, Spanish and Chinese, please visit www.californiacitrusthreat.com.

One of the most common walk-in questions we receive in the UCCE office is weed identification. Did you know that our website has a fantastic page for weed and invasive plant id? It can be found here.

Part of what makes this such a great resource is the variety of ways to search. You can search by plant names in alphabetical order – both by scientific name and common name. In addition you can flip through photos and find the name of the plant. The flip through section is separated into broad leaf varieties and grasses, sedges, and alliums varieties.

Regardless of how you find them, the photos show several shots of each plant. As often as possible, pictures at different life stages are provided.

After identifying your weed, further information is available with a click of the mouse!

Ventura has a new pest, the cherry vinegar fly, Drosophila suzukii. This pest goes after not just cherries, but raspberries, strawberries, blueberries and blackberries. It has been in the Central Valley and along the coast for over a year now and is a serious pest. Background information and an outline for likely management practices can be found on UC ANR's Strawberry and Caneberry blog. Color photos of the pest and damage caused along with lifecycle information can be found here.  

Rose Hayden-Smith, our UCCE County Director, learned about the pest from Agricultural Commissioner Henry Gonzalez at a recent Farm Bureau meeting. She told Jim Downer, a Farm Advisor in our office, who grows berries at his home. Jim commented that he had seen a possible suspect on his fruit. Jim submitted the infested blackberry fruit into the County of Ventura Ag Commissioner and his suspicions were confirmed. In addition our Farm Advisors have been hearing reports from raspberry and blueberry growers about the effect of the flies on fruit.

Stay tuned for more information as it becomes available.

The University of California (UC) Statewide Master Gardener Program has recently developed a Web site for California’s home gardeners at http://groups.ucanr.org/cagardenweb/index.cfm – Advice to Grow By! This new site will be the UC gardening portal, extending UC research-based information about gardening, landscapes, and lawns. The site focuses on sustainable gardening practices and uses a question and answer format.

The Master Gardener website committee used the current California Master Gardener Handbook for structure and content. The site is incredibly informative and easy to follow.

Main categories on the navigation bar are:

Gardening basics * Your climate zone * Find your local Master Gardener * Pests, diseases, weeds * Vegetables * Nut & fruit trees & vines * Landscape trees, shrubs & vines * Lawns * Flowers * Indoor plants * Poisonous plants * Glossary * Classes & events

Another great feature on the home page of the site is “Your Weekly Gardening Tip – a UC Blog”. As the title suggests, a weekly gardening tip is provided to allow readers to easily access information pertaining to issues most likely of concern to readers at the time the tip was posted. As with the rest of the site, further related information is easily accessible.

Next time you have a question, or some extra time to simply enjoy learning, check it out. You’ll be glad you did!