Zone 3 · Madagascar Periwinkle
Planting Madagascar Periwinkle in Zone 3
Catharanthus roseus
✅ Madagascar Periwinkle thrives in zone 3 (hardy 2–11)
Can I plant today?
✅ Start Madagascar Periwinkle indoors now
You're 4 weeks from last frost. Transplant after soil warms (wait past last frost). Heat- and drought-tolerant summer workhorse.
Evaluated for April 27, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around September 15
Bloom window
June – October
Peak bloom
July
Sun required
full sun
Mature height
14"
Spacing
12" apart
Type
annual
How to plant Madagascar Periwinkle in zone 3
Transplant after soil warms (wait past last frost). Heat- and drought-tolerant summer workhorse.
💡 In zone 3, start seeds indoors around March — about 8 weeks before your last frost.
Pair with these for continuous bloom
Madagascar Periwinkle peaks in July. These companions keep your bed in color before and after.
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