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🥬 Vegetable medium

Growing Celeriac in San Francisco

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

USDA Zone 9 355 frost-free days 100-120 days to harvest

Quick Answer: Growing Celeriac in San Francisco

Yes, you can grow Celeriac 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 Celeriac takes 100-120 days to harvest. Celeriac needs full sun and regular watering.

Climate Match Analysis

Good Match San Francisco + Celeriac

San Francisco's temperatures (8°C to 22°C) are within the tolerable range for Celeriac (-5°C to 25°C), though not always in the optimal zone (12°C to 22°C). Plant during recommended months for best results.

Celeriac tolerates -5°C to 25°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

Celeriac Planting Calendar for San Francisco

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

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

Celeriac Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

100-120

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Celeriac

Start indoors very early. Needs long cool season. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

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

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

Celeriac thrives in temperatures between 12°C and 22°C, requiring full sun and regular watering. In San Francisco, the best months to plant Celeriac are October, November. Since Celeriac can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 100-120 days after planting.

With 600mm of annual rainfall, San Francisco provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in San Francisco

More plants you can grow alongside Celeriac in San Francisco

Keep Exploring

Frequently Asked Questions

Can I grow celeriac in San Francisco?

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

When should I plant celeriac in San Francisco?

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

How long does celeriac take to grow in San Francisco?

Celeriac typically takes 100-120 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 Celeriac to maturity. Start indoors very early. Needs long cool season. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow celeriac indoors in San Francisco?

Celeriac 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 regular watering.

What month do I plant celeriac in San Francisco?

Plant Celeriac 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 celeriac hard to grow in San Francisco?

Celeriac 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 Celeriac in San Francisco is Good.

What grows well with celeriac in San Francisco?

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

Celeriac 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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