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UC Master Gardener Program News:
  • Emerald ash borer on a leaf. Photo by Stephen Ausmus, USDA.
    Important Invasive Species Updates from UC IPM

    Invasive pest species threaten California's natural environment and can have an impact on public health. UC Master Gardeners can help spread the word about these invasive species and how to limit their introduction, spread, and harm. Learn to recognize...


    By Karey Windbiel-Rojas
    Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
    By Melissa G. Womack
    Editor - Communications Specialist III
  • Feather Grass, Nassella tenuissima, is a newly introduced plant that has been showing up in nurseries. (Photo credit: Melissa Womack ©UC Regents)
    Invasive Beauties Can Be Deceiving

    Humans love anything new and different, and that includes plants for their garden. In the past, when bringing plants into California from other places, people had no idea this could cause environmental problems. Whether arriving accidentally or...


  • Reappointment prompts will appear on the VMS home screen of all UC Master Gardener Program volunteers beginning June 1.
    Reappointment Begins June 1, 2022

    It's reappointment time for the UC Master Gardener Program! Before the reappointment process begins we would like to say, volunteers are the heart of the UC Master Gardener Program – thank you! You make the program impact possible. We hope you'll...


    By Melissa G. Womack
    Author - Communications Specialist III
  • UC ANR Giving Day
    UC ANR Giving Day, May 19-20

    On May 19-20 from noon to noon, the UC Master Gardener Program is participating in UCANR's Giving Day — a day to ‘dig deep' to support the program you care about. We invite you to support our mission to extend sustainable...


    By Melissa G. Womack
    Author - Communications Specialist III
  • Ron Atone with students after an enriching workshop, a result of the Amador County School Farm Tours and School Garden programs.
    National Volunteer Month: Gardeners with Heart – Community Connection Leaders

    In April, we celebrate National Volunteer Month and Week (April 17-23), honoring all of the contributions that volunteers make in our communities. All week long, the UC Master Gardener Program will feature stories of exceptional volunteers, or Gardeners...


    By Missy Gable
    Author
  • Becky Bednar presenting the program’s first Victory Garden workshop series at a community garden in San Luis Obispo County. Photo: Jacqueline Shubitowsky.
    National Volunteer Month: Gardeners with Heart – Harvest Helpers (Part 2)

    In April, we celebrate National Volunteer Month and Week (April 17-23), honoring all of the contributions that volunteers make in our communities. All week long, the UC Master Gardener Program will feature stories of exceptional volunteers, or Gardeners...


    By Melissa G. Womack
    Author - Communications Specialist III
Pests in the Urban Landscape:
  • Features of brown marmorated stink bugs. [Credit: Steve Jacobs, PSU]
    Invasive Pest Spotlight: Brown Marmorated Stink Bug

    The invasive pest spotlight focuses on emerging or potential invasive pests in California. In this issue we are covering the brown marmorated stink bug (BMSB).    Brown marmorated stink bug facts    BMSB can cause severe...


    By Karey Windbiel-Rojas
    Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
  • A drought-tolerant garden bed of California poppies, Ceanothus, and Watsonia. Photo by Tina Saravia, UC ANR.
    Drought or Disease?

    With ongoing drought and local water restrictions in place in many areas of California, you may start to see landscape plants suffering from stress caused by a lack of water, calledwater stress. Water-stressed plants can have symptoms that resemble...


    By Belinda J. Messenger-Sikes
    Author - Urban IPM Writer Editor
    By Karey Windbiel-Rojas
    Contributor - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
  • Jumping spider eating a fly. [Credit: Jack Kelly Clark]
    Webinars: Spiders, Pesticides and Water!

    Are you concerned about pesticides in our waterways? Join us on August 18, 2022 at noon for UC IPM's free monthly webinar to learn how to keep surface water clean by reducing pesticide use and runoff. The webinar will be presented by Karey...


    By Karey Windbiel-Rojas
    Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
  • Thinning canopy is an early sign of Bot canker. [Credit: J. Downer]
    Bot Canker: Have You Heard of It?

    Ever heard of Bot canker? "Bot" stands for Botryosphaeria which is a plant disease that results in cankers of trees and other woody plants.   This fungal disease can be worse under drought conditions when trees are stressed. Early symptoms like...


    By Karey Windbiel-Rojas
    Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
  • Leaves of a river red gum eucalyptus tree covered with redgum lerp psyllids. The white growths are the “lerp” produced by the immature (nymph) stage of the insect. [Credit: Jack Kelly Clark]
    Redgum Lerp Psyllid Resource Updated

    If you have eucalyptus trees, you might have noticed white, crusty growth on the leaves. Or maybe you saw a sticky, blackened mess of fallen leaves under a eucalyptus tree. These are signs of the redgum lerp psyllid, one of the most common psyllid pests...


    By Karey Windbiel-Rojas
    Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
  • Fig. 1. Three-lined cockroaches. [Credit: Casey Hubble, UCCE]
    Three-lined Cockroach: an Introduced Nuisance Pest in California

    [Originally published in the Summer 2022 issue of the UC IPM Green Bulletin] The three-lined cockroach, Luridiblatta trivittata, (Figure 1) is the smallest cockroach species in California, with adults averaging only 5–7 mm in length. This newly...


    By Casey Hubble
    Author
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