📍 San Jose, CA · Zone 9b · Last frost Tuesday, February 10, 2026
✏️ ChangeWhen to Plant Thyme in San Jose, California (95172)
Location
San Jose, California
ZIP Code
95172
USDA Zone
9b
Last Frost
Tuesday, February 10, 2026
📅 Your 2026 Planting Dates
Start Seeds Indoors
Tuesday, December 16, 2025
Transplant Outdoors
Tuesday, February 24, 2026
Based on last frost Tuesday, February 10, 2026 · Zone 9b
Pro tip: Start Thyme seeds indoors 8 weeks before your last frost date, then transplant outdoors around Tuesday, February 24, 2026.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun (6+ hours)
💧
Water
Low (drought tolerant)
↔️
Spacing
12" apart
🌱
Planting Depth
0.125" deep
Seeds typically germinate in 14-21 days
Ready to Plant Thyme in San Jose?
Get your seeds now so they're ready by Tuesday, December 16, 2025.
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🤝 Good Companions
Full Companion Planting Guide for Thyme
See which plants help Thyme thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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Common Thyme Varieties
Popular cultivars to look for at your local nursery or seed supplier.
Common Thyme
Classic culinary thyme with small, fragrant leaves; essential in French cooking.
Lemon Thyme
Bright citrus-scented thyme with golden-edged leaves; lovely in fish dishes and teas.
Creeping Thyme
Low-growing groundcover thyme with dense mats of tiny flowers; great between pavers.
French Thyme
Broader-leaved variety with milder, sweeter flavor preferred in Provençal cooking.
🌾 Seed Saving Guide
🟡 ModerateWhen to Harvest Seed
Harvest tiny seed pods when brown and dry — just before they shatter.
Processing
Strip dried stems over a fine mesh, dry extra 2 days, store in small envelopes. Seeds are very tiny.
Seed Viability
Up to 3 years when stored cool, dark, and dry.
Pro Tip
Thyme seeds can vary in flavor intensity. Propagate from stem cuttings to preserve culinary quality.
Raised Bed Planting Guides
A 4×8 bed fits 32 plants of Thyme. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Thyme in San Jose, California? +
In San Jose (Zone 9b), start Thyme seeds indoors around Tuesday, December 16, 2025 and transplant outdoors around Tuesday, February 24, 2026.
What is the last frost date for San Jose, California? +
The average last spring frost date for San Jose, California (ZIP 95172) is around Tuesday, February 10, 2026. This is based on NOAA climate normals for USDA Zone 9b.
How long does Thyme take to grow? +
Thyme typically matures in about 90 days from transplanting. In San Jose, that means you can expect harvest around Tuesday, February 24, 2026 plus 90 days.
Should I start Thyme indoors or direct sow in California? +
Thyme should be started indoors 8 weeks before your last frost date. In San Jose, that means starting around Tuesday, December 16, 2025.
Other Plants for San Jose
Growing Thyme in Zone 9b
Thyme (Thymus vulgaris) is a popular garden vegetable. In San Jose, California, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Tuesday, December 16, 2025.
Your average last frost date is Tuesday, February 10, 2026. Plan to transplant your Thyme seedlings outdoors around Tuesday, February 24, 2026, about 2 weeks after your last frost date.