📍 Bird Island, MN · Zone 4b · Last frost Tuesday, May 5, 2026
✏️ ChangeWhen to Plant Sweet Pea in Bird Island, Minnesota (55310)
Location
Bird Island, Minnesota
ZIP Code
55310
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
📅 Your 2026 Planting Dates
Direct Sow Outdoors
Tuesday, April 7, 2026
Based on last frost Tuesday, May 5, 2026 · Zone 4b
Pro tip: Sow Sweet Pea directly outdoors 4 weeks before your last frost date.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Regular (1-2 inches/week)
↔️
Spacing
6" apart
🌱
Planting Depth
1" deep
Seeds typically germinate in 10-21 days
Ready to Plant Sweet Pea in Bird Island?
Get your seeds now so they're ready by Tuesday, April 7, 2026.
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🤝 Good Companions
⚠️ Avoid Planting Near
Full Companion Planting Guide for Sweet Pea
See which plants help Sweet Pea thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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🌾 Seed Saving Guide
🟢 EasyWhen to Harvest Seed
Allow seed pods to dry and turn tan on the vine. Pick before they pop open and throw seeds.
Processing
Shell dried pods, spread seeds to dry 1 week before storing.
Seed Viability
Up to 3 years when stored cool, dark, and dry.
Pro Tip
Sweet peas are self-pollinating before flowers open — excellent for keeping varieties pure.
Raised Bed Planting Guides
A 4×8 bed fits 4 per sq ft of Sweet Pea. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Sweet Pea in Bird Island, Minnesota? +
In Bird Island (Zone 4b), direct sow Sweet Pea outdoors around Tuesday, April 7, 2026.
What is the last frost date for Bird Island, Minnesota? +
The average last spring frost date for Bird Island, Minnesota (ZIP 55310) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.
How long does Sweet Pea take to grow? +
Sweet Pea typically matures in about 65 days from direct sowing. In Bird Island, that means you can expect harvest around Tuesday, April 7, 2026 plus 65 days.
Should I start Sweet Pea indoors or direct sow in Minnesota? +
Sweet Pea does best when direct sown outdoors. In Bird Island, sow directly around Tuesday, April 7, 2026.
📚 More Sweet Pea Planting Guides
Other Plants for Bird Island
Growing Sweet Pea in Zone 4b
Sweet Pea (Lathyrus odoratus) is a popular garden vegetable. In Bird Island, Minnesota, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, April 7, 2026.
Your average last frost date is Tuesday, May 5, 2026. Sweet Pea grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.