UC Master Gardeners, Santa Clara County, CA
University of California
UC Master Gardeners, Santa Clara County, CA

Citrus

UC Links
Lemons on tree

How to grow: The California Garden Web, Citrus

Pest management: Citrus

Santa Clara County specific article: Citrus Year-Round in Your Home Garden

The Basics

When to plant: Mid-March–April, after the last frost date

Harvest window: Year-round, depending on variety

Fertilization: Nitrogen in January, again in May/June timeframe. Monitor for zinc, iron, and other micronutrient deficiencies and correct through foliar application or soil pH adjustments.

Annual care overview:

  • Most citrus requires frost protection when temperatures dip below 25 degrees fahrenheit; monitor and protect citrus plants (cover, lights, a south-facing wall are examples)
  • Monitor for whiteflies, scale, mites, and sooty mold; many of which can be controlled by controlling for ants.

Some Recommended Varieties for Santa Clara County*

Grapefruit: Oro Blanco

Kumquats: Meiwa, Nagami

Lemons: Eureka, Lisbon, Meyer

Limes: Bearss

Oranges: Lane's Late Navel, Robertson Navel, Valencia, Washington Navel

Mandarins: Clementine, Dancy, Encore, Fremont, Kara, Kinnow, Page, Satsuma (seedless)

Tangelos: Minneola

* Many other varieties may also do well here in Santa Clara County. This list is based on UC Master Gardener trials, taste tests, and feedback from local growers.

Webmaster Email: webmaster-mgsantaclara@ucanr.edu