Zone 4 · Common Lilac
Planting Common Lilac in Zone 4
Syringa vulgaris
✅ Common Lilac thrives in zone 4 (hardy 3–7)
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
April – May
Peak bloom
May
Sun required
full sun
Mature height
96"
Spacing
72" apart
Type
perennial
How to plant Common Lilac in zone 4
Plant in fall or early spring. Intensely fragrant 2–3 week bloom. Prune right after flowering — lilacs bloom on old wood.
Pair with these for continuous bloom
Common Lilac peaks in May. These companions keep your bed in color before and after.
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