Growing Radish in San Francisco
🇺🇸 Zone 9 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Radish in San Francisco
Yes, you can grow Radish 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 easy, and Radish takes 22-30 days to harvest. Radish needs full sun and regular watering.
Climate Match Analysis
San Francisco's temperatures (8°C to 22°C) are within the tolerable range for Radish (2°C to 24°C), though not always in the optimal zone (10°C to 18°C). Plant during recommended months for best results.
San Francisco Climate Data
Radish Planting Calendar for San Francisco
Green months show the best time to plant Radish in San Francisco
Radish Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
22-30
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Radish
Sow directly. Don't let soil dry out or roots will be pithy. 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: Radish is frost tolerant — you can plant earlier in spring.
Companion Plants for Radish
Find out which plants grow best alongside Radish — and which to keep apart
Grow Radish Indoors
No garden? Learn how to grow Radish indoors with our complete guide
How to Grow Radish 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. Radish is one of the easiest plants to grow in this climate.
Radish thrives in temperatures between 10°C and 18°C, requiring full sun and regular watering. In San Francisco, the best months to plant Radish are October, November. Since Radish can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 22-30 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 Radish in San Francisco
Keep Exploring
Frequently Asked Questions
Can I grow radish in San Francisco?
Yes! Radish 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 Radish here is rated "easy". The best months to plant are October, November.
When should I plant radish in San Francisco?
In San Francisco, the recommended planting months for Radish are October, November. San Francisco has 355 frost-free days per year, with winter lows of 8°C and summer highs of 22°C. Radish is frost tolerant, giving you more flexibility with planting dates.
How long does radish take to grow in San Francisco?
Radish typically takes 22-30 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 Radish to maturity. Sow directly. Don't let soil dry out or roots will be pithy. 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 radish indoors in San Francisco?
Radish 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 radish in San Francisco?
Plant Radish 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 radish hard to grow in San Francisco?
Radish is rated "easy" to grow in San Francisco. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Radish in San Francisco is Good.
What grows well with radish in San Francisco?
In San Francisco, you can grow many companion plants alongside Radish. 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 radish need full sun in San Francisco?
Radish requires full sun. In San Francisco, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.