Botanical Name: Catharanthus roseus ‘Valiant™ Pure White’

Common Name: Annual Vinca, Madagascar Periwinkle

Hardiness Zone: Grown as an Annual in All Climates

Size: 14–18" Tall × 14–18" Wide

Growth Habit: Upright, Mounded, Well-Branched

Sunlight: Full Sun

Soil: Well-Drained Soil; Tolerates Poor or Sandy Soils

Water Needs: Low Once Established; Drought Tolerant

Bloom Season: Late Spring through Frost

Fertilizer: Light Feeding; Avoid Excess Fertility

Features: Crisp Pure White Blooms, Excellent Heat Tolerance, Strong Disease Resistance, Continuous Flowering

Uses: Landscape Beds, Borders, Containers, Mass Plantings, High-Heat Areas

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited Without License

More About Vinca ‘Valiant™ Pure White’ (Annual Vinca)

Valiant™ Pure White is one of those plants that quietly does everything right. The flowers are a true, clean white—not creamy or washed out—and they hold their brightness even during long stretches of summer heat. That makes this variety especially valuable for brightening beds, borders, and containers when darker colors start to feel heavy.

The plant forms a sturdy, evenly branched mound that fills in quickly without becoming leggy. Like the rest of the Valiant™ Series, it was bred specifically for improved disease resistance, which shows up clearly in hot, humid conditions where older Vincas often struggled. The foliage stays clean and healthy while the plant continues to flower steadily.

Valiant™ Pure White thrives in full sun and well-drained soil and prefers lighter watering once established. It handles drought with ease and keeps blooming right through summer and into fall. Overwatering or overly rich soil can slow it down, so simple care produces the best results.

Why We Like It (Our Trials)

At Garden Delivery, Valiant™ Pure White has been exceptionally reliable in high-heat trial areas. It maintained consistent flowering and clean foliage through peak summer when many annuals faded or declined. The color stayed bright and didn’t yellow or dull, even under intense sun.

We also like how flexible it is in design. White works with everything, and this one holds its own next to both bold and soft colors. For gardeners who want a dependable, no-fuss white annual that thrives in heat, this Vinca is hard to beat.