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When to Plant Asparagus in Britton, South Dakota (57430)

Location

Britton, South Dakota

ZIP Code

57430

USDA Zone

4a

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, March 20, 2026
Transplant Outdoors Friday, May 29, 2026

Pro Tip: Start Asparagus seeds indoors 8 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Asparagus officinalis
Days to Maturity 56 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-21 days

🤝 Good Companions

TomatoAsterDillCorianderParsleyBasilComfreyMarigold

⚠️ Avoid Planting Near

OnionGarlicPotato

Other Plants for Britton

Growing Asparagus in Zone 4a

Asparagus (Asparagus officinalis) is a popular garden vegetable. In Britton, South Dakota, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, March 20, 2026.

Your average last frost date is Friday, May 15, 2026. Plan to transplant your Asparagus seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.