How to Grow Sweet Pea
Get Your Exact Sweet Pea Planting Dates
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🛠️ Supplies You'll Need
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🌿 Plant Overview
☀️ Growing Requirements
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Sun
Full Sun (6-8 hours)
💧
Water
Regular (1-2 inches/week)
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Spacing
6" apart
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Depth
1" deep
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Height
48-72"
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Germination
10-21 days
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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.
Seed Storage Supplies
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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 →
Sweet Pea Planting Calendar by Zone
Sweet Pea Planting Calendar by State
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Frequently Asked Questions
When should I plant Sweet Pea? +
Sow Sweet Pea seeds directly in the garden 4 weeks before your last frost date. Use the search on this page to find exact dates for your location.
How long does Sweet Pea take to grow? +
Sweet Pea typically matures in about 65 days from planting. Exact timing varies by variety, soil conditions, and local climate.
Should I start Sweet Pea indoors or direct sow? +
Sweet Pea does best when direct sown outdoors. Plant seeds directly in the garden at the appropriate time based on your local frost dates.
How much sun does Sweet Pea need? +
Sweet Pea requires full sun (6-8 hours) to thrive.
How far apart should I plant Sweet Pea? +
Space Sweet Pea plants 6 inches apart to allow adequate airflow and root development.
How much water does Sweet Pea need? +
Sweet Pea has regular (1-2 inches/week) water needs. Consistent moisture is important especially during germination and early growth.
Can you save seeds from Sweet Pea? +
Yes — seed saving difficulty for Sweet Pea is rated easy. Allow seed pods to dry and turn tan on the vine. Pick before they pop open and throw seeds. Shell dried pods, spread seeds to dry 1 week before storing.
How long do Sweet Pea seeds last in storage? +
Properly dried and stored Sweet Pea seeds remain viable for up to 3 years. Store in a cool, dark, dry location in an airtight container with a silica gel packet for best results.
Are Sweet Pea seeds open-pollinated? +
Yes — Sweet Pea is open-pollinated, meaning seeds saved from your harvest will grow plants true to the parent variety. This makes it an excellent candidate for building a self-sustaining garden.
About Sweet Pea
Fragrant climbing annual with delicate, jewel-colored blooms. Sow early — needs cool weather to establish. Soak seeds overnight before planting for better germination.
Expect your Sweet Pea to be ready for harvest in approximately 65 days from planting.
Use the search above or browse by zone or state to find the perfect planting dates for your location.