When to Plant Larkspur in Fort Collins, Colorado (80521)

Location

Fort Collins, Colorado

ZIP Code

80521

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Direct Sow Outdoors Saturday, March 28, 2026

Pro Tip: Sow Larkspur directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Consolida ajacis

Days to Maturity 65 days

Mature Height 24-48"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Moderate (1 inch/week)

↔️

Spacing

9" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 14-21 days

Ready to Plant Larkspur in Fort Collins?

Get your seeds now so they're ready by Saturday, March 28, 2026.

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Growing Larkspur in Zone 5b

Larkspur (Consolida ajacis) is a popular garden vegetable. In Fort Collins, Colorado, which is in USDA Hardiness Zone 5b, you should direct sow seeds around Saturday, March 28, 2026.

Your average last frost date is Saturday, April 25, 2026. Larkspur grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.