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When to Plant Sweet Pea in Anchorage, Alaska (99521)

Location

Anchorage, Alaska

ZIP Code

99521

USDA Zone

5a

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, April 12, 2026

Pro Tip: Sow Sweet Pea directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Lathyrus odoratus
Days to Maturity 65 days
Mature Height 48-72"
Spread 8"

☀️ 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 Anchorage?

Get your seeds now so they're ready by Sunday, April 12, 2026.

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🤝 Good Companions

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⚠️ Avoid Planting Near

OnionGarlic

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Growing Sweet Pea in Zone 5a

Sweet Pea (Lathyrus odoratus) is a popular garden vegetable. In Anchorage, Alaska, which is in USDA Hardiness Zone 5a, you should direct sow seeds around Sunday, April 12, 2026.

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