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When to Plant Bachelor Button in Black Hawk, South Dakota (57718)

Location

Black Hawk, South Dakota

ZIP Code

57718

USDA Zone

5a

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, April 26, 2026

Pro Tip: Sow Bachelor Button directly outdoors 2 weeks before your last frost date.

🌿 Plant Details

Scientific Name Centaurea cyanus
Days to Maturity 60 days
Mature Height 12-30"
Spread 9"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Low to Moderate

↔️

Spacing

9" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Bachelor Button in Black Hawk?

Get your seeds now so they're ready by Sunday, April 26, 2026.

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Growing Bachelor Button in Zone 5a

Bachelor Button (Centaurea cyanus) is a popular garden vegetable. In Black Hawk, South Dakota, which is in USDA Hardiness Zone 5a, you should direct sow seeds around Sunday, April 26, 2026.

Your average last frost date is Sunday, May 10, 2026. Bachelor Button grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.