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Growing Tarragon in San Francisco

🇺🇸 Zone 9 Planting Guide · Warm-summer Mediterranean climate

USDA Zone 9 355 frost-free days 60-90 days to harvest

Quick Answer: Growing Tarragon in San Francisco

Yes, you can grow Tarragon in San Francisco, US! Plant during Oct, Nov 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 Tarragon takes 60-90 days to harvest. Tarragon needs full sun and moderate watering.

Climate Match Analysis

Good Match San Francisco + Tarragon

San Francisco's temperatures (8°C to 22°C) are within the tolerable range for Tarragon (-10°C to 28°C), though not always in the optimal zone (12°C to 22°C). Plant during recommended months for best results.

Tarragon tolerates -10°C to 28°C
Optimal: 12°C - 22°C
San Francisco range 8°C to 22°C

San Francisco Climate Data

USDA Zone
9
Frost-Free
355days
Winter Low
8°C
Summer High
22°C
Rainfall
600mm/yr
Climate
Csb
Warm-summer Mediterranean

Tarragon Planting Calendar for San Francisco

Green months show the best time to plant Tarragon in San Francisco

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Tarragon Not recommended

Tarragon Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Moderate

Keep soil consistently moist

📅

Days to Harvest

60-90

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Tarragon

French tarragon can't be grown from seed -- buy plants. Can be planted 2-3 weeks before the last expected frost in your area, giving it a head start on the growing season. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Frost tolerance: Tarragon is frost tolerant — you can plant earlier in spring.

How to Grow Tarragon 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. Tarragon grows well with some gardening knowledge in this climate.

Tarragon thrives in temperatures between 12°C and 22°C, requiring full sun and moderate watering. In San Francisco, the best months to plant Tarragon are October, November. Since Tarragon can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 60-90 days after planting.

With 600mm of annual rainfall, San Francisco provides moderate natural moisture. This should be adequate for Tarragon's water needs.

Other Plants That Grow in San Francisco

More plants you can grow alongside Tarragon in San Francisco

Keep Exploring

Frequently Asked Questions

Can I grow tarragon in San Francisco?

Yes! Tarragon 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 Tarragon here is rated "medium". The best months to plant are October, November.

When should I plant tarragon in San Francisco?

In San Francisco, the recommended planting months for Tarragon are October, November. San Francisco has 355 frost-free days per year, with winter lows of 8°C and summer highs of 22°C. Tarragon is frost tolerant, giving you more flexibility with planting dates.

How long does tarragon take to grow in San Francisco?

Tarragon typically takes 60-90 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 Tarragon to maturity. French tarragon can't be grown from seed -- buy plants. Can be planted 2-3 weeks before the last expected frost in your area, giving it a head start on the growing season. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Can I grow tarragon indoors in San Francisco?

Tarragon 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 Oct, Nov outdoor planting window. Use containers with good drainage and moderate watering.

What month do I plant tarragon in San Francisco?

Plant Tarragon in San Francisco during October, November. 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 tarragon hard to grow in San Francisco?

Tarragon 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 Tarragon in San Francisco is Good.

What grows well with tarragon in San Francisco?

In San Francisco, you can grow many companion plants alongside Tarragon. 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 tarragon need full sun in San Francisco?

Tarragon requires full sun. In San Francisco, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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