When to Plant Turmeric in San Francisco County, CA
Turmeric is a tropical plant producing bright orange rhizomes with a warm, earthy flavor and potent anti-inflammatory properties. It is closely related to ginger.
San Francisco County, California is in USDA Zone 10b. The average last spring frost is February 23 and the first fall frost is November 27, giving you a growing season of approximately 277 days.
At an elevation of 412 feet, San Francisco County receives approximately 13.5 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Turmeric during the growing season. With low rainfall, drip irrigation is essential for growing Turmeric successfully. Mulch heavily to conserve soil moisture.
San Francisco County Soil Profile
Soil Type
Loam
Soil pH
6.2-7.2
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Turmeric Planting Timeline — San Francisco County, CA
Turmeric Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 12 | Jan 12 – Jan 26 |
| Transplant Outdoors | March 2 | Mar 2 – Mar 16 |
| Direct Sow | February 23 | Feb 23 – Mar 16 |
| Harvest | November 2 | Nov 2 – Jan 11 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Harvest |
| February | Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | Harvest |
| December | Harvest |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
High — keep soil consistently moist
Days to Maturity
240–300 days
Soil pH
5.5 – 7.5
USDA Zone
Zone 10b
Growing Season
277 days
Growing Tips for San Francisco County
Plant rhizome pieces 2 inches deep in rich, moist soil after last frost. Maintain warmth and humidity. Harvest after foliage dies back in fall. In cold climates, grow in large containers.
Companion Planting
Good Companions
Level Up Your Garden
Turmeric in Other Locations
Frequently Asked Questions
When should I plant Turmeric in San Francisco County, CA?
San Francisco County is in Zone 10b with an average last frost of February 23. Plan your Turmeric planting based on this frost date — see the calendar above for exact timing.
What planting zone is San Francisco County, CA?
San Francisco County, California is in USDA Hardiness Zone 10b. The average last spring frost is February 23 and first fall frost is November 27.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help San Francisco County gardeners in Zone 10b organize planting dates, track what's growing, and never miss a planting window.
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