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ACP (Asian citrus psyllid) found in San Joaquin county

You may have heard that ACP (Asian citrus psyllid) was found in Lodi, Manteca and recently Stockton. The Master Gardeners are ready to answer your questions about this invasive pest. Click here to find out how you can help prevent the spread of this unwanted pest and what to do if you think you have it.



What's Growing On - SJMG Blog

Valley Gardener's Journal For Year-Round Blooms

The San Joaquin Master Gardeners are excited about the Valley Gardener's Journal For Year-Round Blooms. This garden journal is now available for purchase and is great for any gardener. For more info click here!  

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Garden Notes  Master Gardener Newsletter

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UC Garden Blogs
  • A cabbage white butterfly, Pieris rapae, nectaring on catmint last summer in Vacaville. (Too late in the season last year to win Art Shapiro's contest.) (Photo by Kathy Keatley Garvey)
    Pieris rapae, Pieris rapae, Pieris rapae...

    "Today dawned foggy," began Art Shapiro, distinguished professor of evolution and ecology, in a Jan. 22nd group email. As you know, Shapiro sponsors the annual Cabbage White Butterfly Contest--the first person who collects the first cabbage white of the...

    By Kathy Keatley Garvey
    Author - Communications specialist
  • A male monarch nectaring on Mexican sunflower (Tithonia) in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
    A Troubling Question: Why Are the Monarchs Declining in the West?

    The question is troubling: What's going on with the monarch butterfly population in the West? The Xerces Society for Invertebrate Conservation reported this week that its Western Monarch Thanksgiving Count shows a decline for the second consecutive...

    By Kathy Keatley Garvey
    Author - Communications specialist
  • These rocks at the Bohart Museum of Entomology depict favorite insects: honey bees and ladybugs (lady beetles.) The larger rock, inspired by Valentine's Day, is titled
    Why These Rock Artists Are Rock Stars

    Rock artists, all. Those who painted rocks at the UC Davis Bohart Museum of Entomology open house on Saturday, Jan. 18 were not just rock artists. They were rock stars, painting creative, inspirational and seasonal illustrations. A sign on the table,...

    By Kathy Keatley Garvey
    Author - Communications specialist
  • Figure. 1 Herbicide damage in 2nd leaf almonds. Glufosinate + Glyphosate (1.5 + 2.75lbs/ac). Fig. 1A shows trunk gummosis observed 5 weeks after treatment. Fig. 1B shows complete defoliation of the same tree 12 weeks after treatment.
    Young orchard weed management

    Weeds in young orchards compete with trees for orchard resources such as sunlight, water and nutrients. This can lead to reductions in growth and future yields. If weed stands are allowed to mature, not only are they harder to control via chemical and...

    By Drew A Wolter
    Author - Junior Specialist
    By Gale Perez
    Posted by - Program Representative