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When to Plant Larkspur in Black River, Michigan (48721)

Location

Black River, Michigan

ZIP Code

48721

USDA Zone

6a

Last Frost

Monday, April 20, 2026

📅 Planting Calendar

Direct Sow Outdoors Monday, March 23, 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 Black River?

Get your seeds now so they're ready by Monday, March 23, 2026.

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Other Plants for Black River

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Growing Larkspur in Zone 6a

Larkspur (Consolida ajacis) is a popular garden vegetable. In Black River, Michigan, which is in USDA Hardiness Zone 6a, you should direct sow seeds around Monday, March 23, 2026.

Your average last frost date is Monday, April 20, 2026. Larkspur grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.