Zone 4 · Lupine
Planting Lupine in Zone 4
Lupinus polyphyllus
✅ Lupine thrives in zone 4 (hardy 4–8)
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, part sun
Mature height
36"
Spacing
18" apart
Type
perennial
How to plant Lupine in zone 4
Scarify or soak seed overnight; direct-sow in fall or early spring. Resents transplanting once mature.
Pair with these for continuous bloom
Lupine peaks in June. These companions keep your bed in color before and after.
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