Zone 3 · Forsythia
Planting Forsythia in Zone 3
Forsythia × intermedia
✅ Forsythia thrives in zone 3 (hardy 3–8)
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
March – April
Peak bloom
April
Sun required
full sun, part sun
Mature height
96"
Spacing
60" apart
Type
perennial
How to plant Forsythia in zone 3
Plant in spring or fall. Prune right after bloom — it flowers on old wood. Classic early-spring yellow.
Pair with these for continuous bloom
Forsythia peaks in April. These companions keep your bed in color before and after.
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