When to Plant Thyme in Bryn Mawr, California (92318)

Location

Bryn Mawr, California

ZIP Code

92318

USDA Zone

Last Frost

Tuesday, February 10, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, December 16, 2025

Transplant Outdoors Tuesday, February 24, 2026

Pro Tip: Start Thyme seeds indoors 8 weeks before your last frost date, then transplant outdoors around Tuesday, February 24, 2026.

🌿 Plant Details

Scientific Name Thymus vulgaris

Days to Maturity 90 days

Mature Height 6-12"

Spread 12"

Type Ground cover

Fruit Size N/A

☀️ 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 Bryn Mawr?

Get your seeds now so they're ready by Tuesday, December 16, 2025.

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Growing Thyme in Zone 9b

Thyme (Thymus vulgaris) is a popular garden vegetable. In Bryn Mawr, 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.