UC Master Gardeners of San Mateo & San Francisco
University of California
UC Master Gardeners of San Mateo & San Francisco

Advice to Grow By... Ask a Master Gardener

UC Master Gardeners are certified UC volunteers from San Mateo and San Francisco Counties. Our Garden Helpline is available to assist home gardeners with questions about gardening and pest management. Volunteer UC Master Gardeners staff the Helpline on Mondays and Thursdays from 9am - 4pm. (We are closed on holidays.)

Call us: 650-276-7430 

Email us: mgsmsf@ucanr.edu

For fastest service, please provide as much information as you can in your email:

Name

City of Residence

Email

Phone, Best time to call

Description of Problem/Question

For plant or pest problems, please attach photo(s).

  • For plant problems, include:
    • what the damage looks like
    • when symptoms first appeared
    • where is the plant located
    • age of plant
  • For pest problems, include:
    • what damage is occurring
    • extent of the damage (how widely spread)
    • when symptoms first appeared
  • What care has the plant received?
    • Irrigation: Drip/Sprinkler/Hand/Flood. How often?  How long?
    • Fertlizer: What type? How often? Last applied?
    • Chemical applications, if any (herbicides and/or pesticides)

Visit us: You are welcome to visit one of our offices to consult with us during Helpline hours. Please bring your plant or pest problems with you in a sealed bag or container.

NOW IN TWO LOCATIONS: 

Mondays 9-am - 4pm Thursdays 9am - 4pm
at Elkus Ranch
1500 Purisima Creek Road
Half Moon Bay
Google map / Directions

Veterans Memorial Senior Center
1455 Madison Ave.
Redwood City 
Google map

 We also hold regular Plant Clinics in various places in San Mateo and San Francisco Counties. Check our Calendar for locations and dates.

 

Directions to Helpline Office at Elkus Ranch

From San Francisco:

Take Hwy 1 South through Pacifica to Half Moon Bay.

Continue on Hwy 1 south 4 1/2 miles past the Hwy 92 intersection.

Look for green “UC ELkus Ranch Next Right” sign.

Turn LEFT onto Verde Road/Purisima Creek Road.

Continue on Purisima Creek Road for approximately 2 miles.

Look for the green “Richard J Elkus Environmental Education Center” sign and turn RIGHT into our driveway.

PLEASE NOTE: Elkus Ranch is the SECOND driveway on the right hand side of Purisima Creek Road. Please DO NOT turn into the first driveway which is a private residence.

The Helpline office is located in the Conference Center. Once there, enter the 2nd set of doors and take a right in the foyer.

From San Mateo and Peninsula:

Take Hwy 92 WEST to Half Moon Bay.

At Hwy 92/Hwy 1 intersection, turn left and travel 4 1/2 miles south.

Look for green“UC ELkus Ranch Next Right” sign.

Turn LEFT onto Verde Road/Purisima Creek Road.

Continue on Purisima Creek Road for approximately 2 miles.

Look for the green “Richard J Elkus Environmental Education Center” sign and turn RIGHT into our driveway. 

PLEASE NOTE: Elkus Ranch is the SECOND driveway on the right hand side of Purisima Creek Road. Please DO NOT turn into the first driveway which is a private residence.

The Helpline office is located in the Conference Center. Once there, enter the 2nd set of doors and take a right in the foyer.

From Santa Cruz:

Take Hwy 1 North toward Half Moon Bay.

At Hwy 84 (to LaHonda) intersection, continue 6.4 miles North on Hwy 1

Look for green“UC ELkus Ranch Next Right” sign.

Turn RIGHT onto Verde Road/Purisima Creek Road.

Continue on Purisima Creek Road for approximately 2 miles.

Look for the green “Richard J Elkus Environmental Education Center” sign and turn RIGHT into our driveway. 

PLEASE NOTE: Elkus Ranch is the SECOND driveway on the right hand side of Purisima Creek Road. Please DO NOT turn into the first driveway which is a private residence.

The Helpline office is located in the Conference Center. Once there, enter the 2nd set of doors and take a right in the foyer.

elkus map

Webmaster Email: kmstewart@ucanr.edu