How to grow: The California Garden Web, Citrus
Pest management: Citrus
Santa Clara County specific article: Citrus Year-Round in Your Home Garden
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
Oranges: Lane's Late Navel, Robertson Navel, Valencia, Washington Navel
Mandarins: Clementine, Dancy, Encore, Fremont, Kara, Kinnow, Page, Satsuma (seedless)
* 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.