SunStorm® Pure White Catharanthus

SunStorm® Pure White is a compact, mounding Madagascar periwinkle with clear white flowers. Syngenta lists this seed-grown annual for full sun, with an 8–10 inch garden height and 10–12 inch width; the breeder recommends it for packs and small pots. ## Garden Use Use this selection as a low, rounded seasonal accent in sunny beds, borders, and containers. Its white flowers provide a bright contrast with darker foliage or saturated seasonal color. The breeder lists mid-spring through summer flowering and describes the series as early, free-flowering, and well-branched. ## Growing Conditions Plant after cold weather has passed in a sunny site with soil or potting mix that drains freely. Annual vinca performs in heat, but roots are vulnerable to rot when soil stays wet; water when needed and avoid persistent saturation. Let the soil warm before planting. ## Maintenance SunStorm is bred for a naturally branched, compact habit and does not require pinching or routine deadheading. In frost-prone climates, grow it as a warm-season annual. Remove plants when frost ends the display. [Syngenta product information](https://www.syngentaflowers-us.com/product/flower/70001134) · [UF/IFAS growing guidance](https://ask.ifas.ufl.edu/publication/fp112) · [NC State annual vinca profile](https://plants.ces.ncsu.edu/plants/catharanthus-roseus/common-name/annual-vinca/)