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Can't find what you're looking for? Have no fear, simply click on the title of the program that best fits your needs and send your questions via email. If you're unsure of which program to select, enter your name, current email address and a brief message at the bottom of the page and we'll forward the question on to one of our advisors who can assist you. 

**Please be advised: DO NOT include any personal information in your question as the responses will be posted to our website.

Gardening & Home Pest Control

Master Gardeners - Common questions pertaining to home gardening.

Home Gardens and Landscapes Education & Outreach - Common questions pertaining to horticulture and pest management (residential) information to county residents who grow edible and ornamental plants for their personal use.

Natural Resources

Invasive Plants - Common questions pertaining to non-native plants in California's wildlands.

Invasive Tree Pests Education and Outreach - Common questions pertaining to invasive tree insects and diseases in our urban and natural forests.

Wildfire Education & Outreach - Common questions pertaining to wildfires and fire-related topics.

Vertebrate Pest Management - Common questions pertaining to agricultural vertebrate pest control including pesticide application and humane trapping practices of wildlife in the state of California.

Nutrition, Family & Consumer Science

Expanded Food Nutrition Education Program (EFNEP) - Common questions pertaining to opportunities for families, individuals, and youth to enhance their quality of living by providing resources that support independence and self-sufficiency.

Commercial Agriculture

Avocado, Citrus, Subtropical & Deciduous Fruit - Common questions pertaining to subtropical horticulture.

Small Farms & Agriculture Economics 
- Common questions pertaining to business & risk management education, new crop development & evaluation, and marketing information for small farmers and new growers.

Floriculture, Nursery Crops & Pest Management 
- Common questions pertaining to ornamental horticulture including greenhouse and nursery, floriculture and foliage production, Integrated Pest Management and Invasive Pests.

Commercial Integrated Pest Management - Common questions pertaining to developing integrated pest management programs in commercial production, plant maintenance, school IPM for insects, weeds, vertebrate pests. Questions about home gardening, home landscaping and pest in and around private homes should be directed to the UC Master Gardeners.

Water Quality and Irrigation Management - Common questions pertaining to watershed research, urban and agricultural water quantity, and quality issues.

Weed Management - Common questions about managing weeds in agricultural crops, commercial turf and landscapes, and ornamental production.

4-H Youth Development

4-H Youth Development - Common questions pertaining to activities, youth-adult partnerships, and research-based educational programs to help young people discover and develop their full potential!


  • Diane Mahan
    July 10, 2019

    Will there be a Pitahaya field day this year.

  • can sinan
    June 23, 2019

    Hi, I have an idea , I have pitahaya named dragon fruits. And I have prickly pears (opuntia ). now i want to ask you a question. If i grafting my pitahayas on my prickliy pears can i pruduce dragon fruits on prickly pears? I saw graft orchid cactus on opuntia in internet webside but no fruits. can you help me please. I want to produce my dragon fruits quicklier with this siystem. Best regards. Can Okser SINAN TURKEY , KARAMAN CITY

  • Chris Whyte
    June 21, 2019

    Hello, I was told to contact your organization to achieve an accurate pH test of my lawn. My lawn is flourishing in spots, and not so much in many others, and I'd like to learn more about my soil in the struggling spots. How do I go about doing so? Thabk you so much!

  • Jessica
    June 21, 2019

    I believe that I have elderberry growing in my yard and I want to get an ID on it. Am I able to bring a clipping of it in for an ID of the plant? Or do you ever have people who come out to check it in the yard?

  • Kristopher Monterroso
    May 18, 2019

    How come UC does not have agricultural degree programs in San Diego? There is a big need for a prestigious school to teach this field. And only SDSU has the ability to cater to this need. When will UCSD give SD this much needed support?

  • Anne K. Stadler
    May 14, 2019

    How do we eradicate goat head safely? The fields are covered with goat heads... Two years ago I pulled them out by the roots... No possible this year! What do you recommend? Thank you!

  • connie hernandez
    April 22, 2019

    Hi! how good of a chance do I have of growing Chermoya, Guanabana & Jack-fruit trees in San Marcos 92069 ? Thank you in advance.

  • Ian Furlong
    January 8, 2019

    I would like to have my garden soil tested, how do I do this?

  • Charlene Craig
    January 8, 2019

    The # to call the Ag Ext office 694-2845 provides a message that says it's a bad number no other info. Is there no alternative or other way to call them to ask a question? Having to drive 20+ miles round trip to ask a fruit problem question is not realistic if that's the only option now. Thanks!

  • Sue Sifton
    December 3, 2018

    We have purchased a horse property on a slope in the Ramona area. The elevation is about 2,000'. There are acre paddocks that will be empty. Is there a perennial grass, ( native preferred) or mix of grasses that you would recommend, that I could sew now to hold the slope, prevent erosion, and keep the more noxious exotic weeds at bay, that would provide supplemental winter grazing next year?

  • Danny Davis
    December 3, 2018

    Hello, I am reaching out to your county to see about being a potential livestock judge for your county fair. I am a national judge and also an Agricultural Education Instructor. I love traveling to new places and working with youth in all parts of the country. If I can be help out in any way, don't hesitate to contact me. Thanks, Danny Davis

  • Mallika Sen
    November 30, 2018

    Working on a sustainable manure management pilot program for the County of San Diego connecting equine facilities directly with farmers to facilitate horse manure being used as a fertilizer vs. being sent to landfills. Farms that best work with fresh horse manure for direct land application are field crop farmers. Guidance on how to find field crop farmers in SD County would be much appreciated. I am a consultant to the County of San Diego on this project. Thank you for your help. Mallika

  • Don Miller
    November 8, 2018

    I'm concerned about native oak that were, in particular, stressed in July when there was a 115-degree day. The continuing drought has not helped either. Is there a county arborist available to look at, and make recommendations if anything can be done for them?

  • Kaye
    November 3, 2018

    My question is: What causes a Palo Verde tree to shed all its leaves? Could it be poor drainage?

  • Raymond Edwords jr.
    October 26, 2018

    I have a caterpillar photo and some dead palms in Mission Valley. The Caterpillar is not the Palm weevil (tan body, dark head). The palms in Mission Valley are dead and/or dying. The immediate neighborhood also shows dying or dead palms. Where can I send the photo I have with caterpillars so that you can assist me in the ID and a solution for eliminating these caterpillars. The primary issue is the death of the larger palms in excess of 50 feet. Please reach out to me as soon as possible. It means a lot to us protect these beautiful trees. Thank You Raymond Edwords Jr. 619-402-8670

  • Daniel Boyd
    September 23, 2018

    I recently saw a fibrous white fluff on a stem of broom brush (Baccharis sarothroides). I did not have a loupe to inspect closely, and I wasn't able to get the clearest picture with my camera (I can share the pictures however). I am trying to find out if it is possibly a woolly gall midge, woolly aphid, mealy bug, or perhaps something entirely different. It was viewed in Mission Trails Regional Park. Any help identifying or direction to an entity that can would be greatly appreciated. Thank you.

  • Mike Moellering
    August 28, 2018

    I need a help identifying the type of cactus, if I send a picture of it can you help me?

  • Emily Hardy
    August 9, 2018

    Hello, I work for the Carlsbad City Library and we have a community garden with lots of local plants and trees but no botanical name plates, and I would like to start a grant writing project to accomplish this as an educational tool for our community. I was wondering if you could offer any support or information for community partners who could help us with this project. Any information would be appreciated! Best, Emily Hardy emily.b.hardy@gmail.com (520) 216-0060

  • Rudy Mallonee
    June 16, 2018

    Hello, I've seen a few videos of yours on dragon fruit production. Do you have/sell cuttings for S. Megalanthus or would you have an address where I can buy them ? Thank you, Rudy

  • Thom Ford
    June 16, 2018

    Hello, I have a small vineyard (400+ vines) in Poway, Ca. This year, I have noticed that some of my newer Primitivo and Syrah Vines have minimal or no budding. Would it be possible to set an appointment with a farm advisor to review my situation? Thank you. Thom Ford 858-472-4186

    June 14, 2018


  • Rebecca Wollner
    June 10, 2018

    I live in an older condo. I have a patio garden situated under a painted balcony. Over the years, paint has flaked off the balcony into the garden. The condo is old enough that at one point the balcony might have been painted with lead paint. Is it okay to grow food in the garden? Or will the potential lead and who knows what else get in the plants? Thanks!

  • rodger
    June 6, 2018

    howdy, I have all these rain barrels, and I need to sell them. I was wondering, since you have a connection to schools, if you knew of any way i could sell my plastic barrels to high schools? Or colleges? I know it would be cheaper for the schools (than buying new containers). And it would be a little more helpful for me. I don't know how i would get in touch with the right gardening/agricultural community, though. Id appreciate your suggestions

  • Kory Assef
    June 4, 2018

    I need to fulfill some volunteer hours. Do you have anything i can do to cover 13 hours of volunteering in the San Diego area ?

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