Zone 3 · Sweet Pea
Planting Sweet Pea in Zone 3
Lathyrus odoratus
✅ Sweet Pea thrives in zone 3 (hardy 2–11)
Can I plant today?
⏳ Too early to direct-sow
Last frost is in 4 weeks. Wait until soil warms.
Evaluated for April 27, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around September 15
Bloom window
May – July
Peak bloom
June
Sun required
full sun
Mature height
72"
Spacing
6" apart
Type
annual
How to plant Sweet Pea in zone 3
Soak seed overnight; direct-sow 4-6 weeks before last frost against a trellis. Cool-season; fades in heat.
Pair with these for continuous bloom
Sweet Pea peaks in June. These companions keep your bed in color before and after.
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