White Periwinkle Seeds - Flower Plant

White Periwinkle is a heat-loving flowering plant admired for its pure white, five-petaled blooms and glossy green foliage. Blooming continuously from late spring until frost, it is an excellent choice for flower beds, borders, containers, hanging baskets, and mass plantings. The plant thrives in full sun with well-drained soil and is highly tolerant of heat and drought once established, making it a dependable, low-maintenance addition to ornamental gardens.

Features

• Produces abundant pure white flowers
• Long blooming season from late spring through fall
• Heat and drought tolerant once established
• Ideal for borders, containers, hanging baskets, and landscape beds
• Attractive glossy green foliage
• Easy to grow and low maintenance
• Excellent for pollinator-friendly gardens

Specifications

• Scientific Name: Catharanthus roseus
• Common Name (US): Madagascar Periwinkle / Annual Vinca
• Seed Type / Variety: White Flowering Annual Variety
• Growth Habit: Bushy annual (perennial in frost-free climates)
• USDA Zones: 10–11 (grown as an annual in cooler climates)
• Planting Season: Spring after the last frost
• Growing Season: Late Spring through Fall
• Sowing Season: February–April (indoors) or after the last frost outdoors
• Germination Time and Conditions: 7–14 days at 75–80°F (24–27°C); cover seeds lightly, as darkness aids germination
• Sunlight Requirements: Full sun to partial shade
• Soil Requirements: Well-drained sandy or loamy soil with moderate fertility
• Watering Needs: Moderate; water regularly during establishment, then allow the soil to dry slightly between waterings
• Mature Plant Size: 12–18 inches tall, 12–18 inches spread
• Plant Spacing: 10–12 inches apart