When to Plant Thyme in Marengo, Wisconsin (54855)

Location

Marengo, Wisconsin

ZIP Code

54855

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, March 10, 2026

Transplant Outdoors Tuesday, May 19, 2026

Pro Tip: Start Thyme seeds indoors 8 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 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 Marengo?

Get your seeds now so they're ready by Tuesday, March 10, 2026.

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Growing Thyme in Zone 4b

Thyme (Thymus vulgaris) is a popular garden vegetable. In Marengo, Wisconsin, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 10, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Thyme seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.