How to Grow Vinca (Periwinkle): Indestructible Color for Hot, Dry Sites

How to Grow Vinca (Periwinkle)

Vinca (Catharanthus roseus), also called Madagascar Periwinkle or Myrtle, is a bulletproof annual for the toughest spots. Heat- and drought-tolerant, it thrives in full sun to shade, blooming nonstop from early summer to frost in white, rose, pink, and red atop glossy green foliage. One gardener reported 30 years of self-sown returns in the same bed. Native to North America, Europe, China, and India. Grows 1–2 feet tall; excellent for borders, edging, groundcover, and beds.

Medicinal history: Used traditionally for blood pressure, diabetes, respiratory ailments, and infections.

Propagation

Sow seeds outdoors after frost (broadcast or row) or indoors 10–12 weeks early. Self-sows readily. Some varieties root from cuttings.

How to Grow Vinca

• Light: Full sun to shade.
• Soil: Average, well-drained.
• Water: Water well at planting; thereafter only in extreme drought.
• Fertilizer: Once or twice per season.
• Maintenance: Mulch in dry areas. Virtually carefree.

Pests & Diseases

Rare. Fungal issues possible in wet/humid weather—treat early.