Zone 3 · Petunia
Planting Petunia in Zone 3
Petunia × hybrida
✅ Petunia 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 – October
Peak bloom
July
Sun required
full sun
Mature height
10"
Spacing
10" apart
Type
annual
How to plant Petunia in zone 3
Plant transplants after last frost. Full sun for maximum bloom. Use self-cleaning cultivars or deadhead weekly.
Pair with these for continuous bloom
Petunia peaks in July. These companions keep your bed in color before and after.
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