Growing Tomatillo in San Francisco
🇺🇸 Zone 9 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Tomatillo in San Francisco
Yes, you can grow Tomatillo in San Francisco, US! Plant during Jan, Feb, Mar, Apr for best results. San Francisco is in USDA Zone 9 with a Warm-summer Mediterranean climate, offering 355 frost-free days per year. The difficulty level is medium, and Tomatillo takes 60-80 days to harvest. Tomatillo needs full sun and moderate watering.
Climate Match Analysis
San Francisco's climate requires careful timing. Winter lows (8°C) drop below Tomatillo's minimum (10°C), so avoid cold months. Follow the recommended planting months for success.
San Francisco Climate Data
Tomatillo Planting Calendar for San Francisco
Green months show the best time to plant Tomatillo in San Francisco
Tomatillo Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Moderate
Keep soil consistently moist
Days to Harvest
60-80
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Tomatillo
Needs 2+ plants for cross-pollination. Harvest when husks split. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Frost tolerance: Tomatillo is NOT frost tolerant — wait until after the last frost in San Francisco.
How to Grow Tomatillo in San Francisco
San Francisco, US is in USDA Hardiness Zone 9 with a Warm-summer Mediterranean climate (Köppen Csb). With winter lows of 8°C and summer highs of 22°C, the growing season spans approximately 355 frost-free days. Tomatillo grows well with some gardening knowledge in this climate.
Tomatillo thrives in temperatures between 18°C and 27°C, requiring full sun and moderate watering. In San Francisco, the best months to plant Tomatillo are January, February, March, April. Tomatillo is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 60-80 days after planting.
With 600mm of annual rainfall, San Francisco provides moderate natural moisture. This should be adequate for Tomatillo's water needs.
Other Plants That Grow in San Francisco
More plants you can grow alongside Tomatillo in San Francisco
Keep Exploring
Frequently Asked Questions
Can I grow tomatillo in San Francisco?
Yes! Tomatillo can be successfully grown in San Francisco, US. San Francisco is in USDA Hardiness Zone 9 with a Warm-summer Mediterranean climate. The difficulty level for growing Tomatillo here is rated "medium". The best months to plant are January, February, March, April.
When should I plant tomatillo in San Francisco?
In San Francisco, the recommended planting months for Tomatillo are January, February, March, April. San Francisco has 355 frost-free days per year, with winter lows of 8°C and summer highs of 22°C. Since Tomatillo is not frost tolerant, make sure to plant after the last frost date.
How long does tomatillo take to grow in San Francisco?
Tomatillo typically takes 60-80 days from planting to harvest. In San Francisco's Warm-summer Mediterranean climate with 355 frost-free days, you have plenty of time to grow Tomatillo to maturity. Needs 2+ plants for cross-pollination. Harvest when husks split. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Can I grow tomatillo indoors in San Francisco?
Tomatillo can potentially be grown indoors in San Francisco with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Jan, Feb, Mar, Apr outdoor planting window. Use containers with good drainage and moderate watering.
What month do I plant tomatillo in San Francisco?
Plant Tomatillo in San Francisco during January, February, March, April. These are the optimal months based on San Francisco's USDA Zone 9 climate, 355 frost-free days, and temperature range of 8°C to 22°C.
Is tomatillo hard to grow in San Francisco?
Tomatillo is rated "medium" to grow in San Francisco. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Tomatillo in San Francisco is Moderate.
What grows well with tomatillo in San Francisco?
In San Francisco, you can grow many companion plants alongside Tomatillo. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in San Francisco's Zone 9 climate.
Does tomatillo need full sun in San Francisco?
Tomatillo requires full sun. In San Francisco, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.