When to Plant Sweet Pea in Cave In Rock, Illinois (62919)

Location

Cave In Rock, Illinois

ZIP Code

62919

USDA Zone

Last Frost

Friday, April 10, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, March 13, 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 Cave In Rock?

Get your seeds now so they're ready by Friday, March 13, 2026.

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🤝 Good Companions

CarrotRadishSpinach

⚠️ Avoid Planting Near

OnionGarlic

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Growing Sweet Pea in Zone 7a

Sweet Pea (Lathyrus odoratus) is a popular garden vegetable. In Cave In Rock, Illinois, which is in USDA Hardiness Zone 7a, you should direct sow seeds around Friday, March 13, 2026.

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