Colusa County
University of California
Colusa County

Master Gardeners


 Science based solutions for Colusa County's gardening communities.

The UCCE Master Gardeners of Colusa County volunteer's donated 802 hours and made 1458 face to face contacts in 2014/15.


This is what we do!

Click here for a short video!


Fairy Garden workshop


  • Tuesday August 30, 6-8pm
  • 100 Sunrise Blvd, Colusa, Conference room
  • $25 fe includes plants, soil and container.
  • The fee does not include accessories.
  • Patti from Davison's Drug will be at the workshop with accessories to purchase or you can bring your own.
  • In Colusa County, fairy garden accessories can be purchased at Davison's or Fouch's.
  • Deadline August 23 or until the class is sold out. THIS CLASS WILL SELL OUT.

Click here to sign-up and pay.

Lawn Watering Table

Lawn watering a

August in the Garden

August garden tasks:


¨ You can plant directly in the garden seeds of carrots, beets, lettuce, spinach and turnips. Indoors you can start seeds for broccoli, cabbage, kale, bunching onions, and radicchio.


¨ Be sure to monitor your watering system. Check for coverage and

watch for plugged or blocked sprinklers. 


¨ Continue to weed. Be especially sure to get weeds before they

flower and set seeds. 


¨ Check the mulch you have spread around and be sure it is thick

 enough to suppress weeds.  (3 to 4 inches)


¨ Cut off spent flowers of perennials and annuals for continued bloom.


Asian Citrus Psyllid

Asian Citrus Psyllid is an insect that carries a devastating disease in Citrus trees and there is no cure. The insect and disease is usually detected in home citrus first. Click here to read more about the Asian Citrus Psyllid and the Huanglongbing disease.

The Asian Citrus Psyllid has been found in San Joaquin County.

Click here to read about the Asian Citrus Psyllid from the UCCE Master Gardeners of San Joaquin County.

Click here for Spanish


UC Master Gardeners of Colusa County

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The University of California Master Gardener Program provides the public with UC research-based information about home horticulture, sustainable landscape and pest management practices. The program is administered by local University of California Cooperative Extension (UCCE) county offices that are the principal outreach and public service arms of the University’s division of Agriculture and Natural Resources.

The UC Master Gardener program supports sustainable gardening practices that protect the environment, conserve natural resources, and take into consideration each gardener's lifestyle and goals.


What do UC Master Gardeners do?

UC Master Gardeners are trained to help residents of California become better gardeners. Using a variety of activities such as workshops, lectures, and garden hotlines these volunteers answer questions about home horticulture, sustainable landscaping, and integrated pest management using University of California research-based information.

After their training UC Master Gardeners are qualified to help the public with problems in areas such as:

  • Weed Control
  • Plant Problem Diagnosis
  • Integrated Pest Management (insect and pest control)
  • Soils, fertilizers and irrigation
  • Selecting and caring for fruit and landscape trees
  • Growing annuals, perennials and food crops
  • Lawn care
  • Vegetable Gardening
  • Plant Pathology
  • Composting


Each county develops programs to address local needs. Some typical activities are:

  • Using mass media to disseminate gardening information
  • Teaching workshops, or lecturing on gardening practices
  • Participating in research activities with academics within UC
  • Answering gardeners’ questions via email or helplines
  • Speaking to the public on horticultural and gardening topics
  • Manning county fair information booths
  • Consulting with gardeners to improve their landscape practices


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Master Gardener Blog

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A European paper wasp, Polistes dominula, attacks a Gulf Fritillary caterpillar. (Photo by Kathy Keatley Garvey)

So here's this cute little reddish/orangish caterpillar munching away on a passionflower vine. It's Sunday and he's having Sunday dinner--after having Sunday breakfast and lunch and snacks in between, thank you. He's on his way to becoming a Gulf...

William Hazeltine II: His Passion, His Work Live On

UC Davis graduate students who received the Hazeltine mosquito research awards in both 2015 and 2016 are (front, from left) Maribel Portilla, Sandy Olkowski and Stephanie  Kurniawan. In back are Lee Hazeltine (left) of Woodland and Craig Hazeltine of Scottsdale, Ariz. (Photo by Kathy Keatley Garvey)

Noted medical entomologist William Hazeltine II (1926-1994) made a difference. Today he continues to make a difference through his legacy--supporting mosquito research of UC Davis graduate students. Hazeltine, a U.S. Navy veteran who studied entomology...

Posted on Friday, August 26, 2016 at 6:30 PM

Seeing Japanese beetles in your California landscape? Not likely.

Japanese beetle [D. Cappaert,]

Have you seen big green beetles in your California yard or garden? Or beetles feeding on your roses or other plants? There are many kinds of beetles commonly found in our landscapes, but the Japanese beetle is not one of them. Japanese Beetles Many...

Posted on Friday, August 26, 2016 at 2:58 PM
Tags: beetle (6), CDFA (8), chafer (2), green (1), grubs (4), hoplia (1), Japanese (1), June (1), lawn (4), pests (25), UCIPM (42)
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