When to Plant Rosemary in Lindenwood, Illinois (61049)

Location

Lindenwood, Illinois

ZIP Code

61049

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, February 14, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Rosemary seeds indoors 10 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Salvia rosmarinus

Days to Maturity 120 days

Mature Height 24-48"

Spread 24"

Type Shrub

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Low (drought tolerant)

↔️

Spacing

24" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 14-21 days

Ready to Plant Rosemary in Lindenwood?

Get your seeds now so they're ready by Saturday, February 14, 2026.

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Growing Rosemary in Zone 5b

Rosemary (Salvia rosmarinus) is a popular garden vegetable. In Lindenwood, Illinois, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Rosemary seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.