When to Plant Salvia (Annual) in Simms, Montana (59477)

Location

Simms, Montana

ZIP Code

59477

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, February 24, 2026

Transplant Outdoors Tuesday, May 19, 2026

Pro Tip: Start Salvia (Annual) seeds indoors 10 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

🌿 Plant Details

Scientific Name Salvia splendens

Days to Maturity 75 days

Mature Height 12-24"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-21 days

Ready to Plant Salvia (Annual) in Simms?

Get your seeds now so they're ready by Tuesday, February 24, 2026.

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Growing Salvia (Annual) in Zone 4b

Salvia (Annual) (Salvia splendens) is a popular garden vegetable. In Simms, Montana, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, February 24, 2026.

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