Vinca (Madagascar Periwinkle) in Zone 7a & 7b

Catharanthus roseus

When to plant vinca (madagascar periwinkle) in zone 7b

Zones 7a and 7b share the same average frost dates in our data, so this page covers both.

Method: Start indoors: Start indoors from seed, then transplant outside. Vinca (Madagascar Periwinkle) needs a head start most zones can't give it by direct-sowing alone.

Start indoors	Jan 30–Feb 6
Direct sow / transplant outside	Apr 24–May 1
Estimated bloom	Jul 13–Jul 20 (~80 days after transplanting)

Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.

Vinca (Madagascar periwinkle, botanically Catharanthus roseus) is built for heat that stops other flowers cold. Growing In The Garden describes it as synonymous with hot weather in the low desert, blooming through Phoenix summers with little fuss once it's established, a low, 12- to 18-inch mound of flat, five-petaled pink, white, or red flowers, often with a contrasting eye at the center.

How vinca (madagascar periwinkle) fits zone 7's season

Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Vinca (Madagascar Periwinkle) needs about 80 days from transplant to first harvest.

Good companions

No standout companions recorded yet for Vinca (Madagascar Periwinkle).

Where to buy vinca seeds

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