Botanical Name: Diascia barberae ‘Darla® White’

Common Name: Diascia, Twinspur

Hardiness Zone: Perennial in Mild Climates (USDA Zones 7–10); Grown as an Annual Elsewhere

Size: 8–12" Tall × 12–18" Spread

Growth Habit: Compact, Mounding, Well-Branched Habit

Sunlight: Full Sun to Partial Shade (Best with Afternoon Shade in Hot Climates)

Soil: Well-Drained, Average to Fertile Soil

Water Needs: Moderate; Consistent Moisture for Best Performance

Bloom Season: Spring through Fall (Strongest in Cooler Weather)

Fertilizer: Light, Regular Feeding During Active Growth

Features: Crisp White Flowers, Dense Mounded Habit, Long Bloom Season, Pollinator Friendly

Uses: Containers, Borders, Edging, Mass Plantings, Cool-Season Color

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited Without License

See our complete Diascia Growth & Care Guide for full care details.

More About Diascia Darla® White

Diascia Darla® White is a clean, refined twinspur variety prized for its bright white blooms and naturally compact, mounding habit. Its growth is balanced and well-branched, making it far easier to manage than older trailing diascia selections that can sprawl or thin out over time.

The crisp white flowers are produced in abundance from early spring through fall, with the strongest flowering during cooler weather. In regions with mild summers, Darla® White can maintain near-continuous bloom, keeping containers and beds looking fresh and intentional.

Why We Like It (Our Trials)

In our trials, Darla® White has been exceptionally uniform and reliable, especially in containers and front-of-border applications. It fills in quickly, holds its shape without pinching, and maintains a neat, polished appearance throughout the season.

We especially appreciate its design versatility. The pure white flowers act as a visual brightener in mixed plantings, pairing beautifully with bold colors, pastels, and textured foliage. It works equally well as a filler or in mass plantings where a clean, cohesive look is desired, and pollinators visit consistently.

Darla® White vs. Other Diascia

Darla® White is the cleanest and most versatile variety in the Darla® Series, producing crisp white flowers that brighten containers and sharpen nearby colors. Compared to Darla Light Pink and Darla Rose, it draws less attention to itself while enhancing surrounding plants.  Like the other Darla varieties, Darla White forms a compact, mounded plant with excellent branching and consistent flowering.

Against Diascia ‘Coral Canyon®, Darla White feels cooler and more structured, providing contrast rather than warmth. Its neutral tone makes it especially useful in mixed plantings where balance is the goal. It remains tighter and more uniform than Coral Canyon®, which tends to have a slightly more expressive visual presence. Darla White excels where cohesion, brightness, and design flexibility are priorities.