Botanical Name: Iberis sempervirens ‘Purity’

Common Name: Candytuft

Hardiness Zone: Perennial in USDA Zones 3–9

Size: 8–12" Tall × 12–18" Spread

Growth Habit: Low-Growing, Mounding to Mat-Forming Habit

Sunlight: Full Sun to Partial Shade (Best Bloom in Full Sun)

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

Water Needs: Low to Moderate; Drought Tolerant Once Established

Bloom Season: Early to Mid Spring

Fertilizer: Minimal; Light Feeding in Early Spring if Needed

Features: Pure White Flowers, Evergreen Foliage, Deer Resistant, Excellent Groundcover

Uses: Borders, Edging, Rock Gardens, Slopes, Groundcover, Containers

Patent: ❌ Not Patented

Propagation: ✔ Propagation Permitted

See our complete Candytuft Growth & Care Guide for more in depth care details.

More About Iberis ‘Purity’

Iberis ‘Purity’ is one of those timeless Candytuft plants that never feels outdated. When it comes into bloom in Early to Mid Spring, the plant is covered in bright white flowers that create a crisp blanket over the foliage. The effect is clean and structured, especially along borders, walkways, and rock edges where contrast really matters. The white blooms feel sharp against the dark green leaves, giving the planting a polished look without needing anything flashy. It is simple, but it is strong.

Even outside of bloom, ‘Purity’ earns its keep. The evergreen foliage forms a dense, low mound that holds its shape beautifully through the Seasons in milder climates. In our Southern gardens, that year round structure is valuable because it keeps beds from looking empty in Winter. Planted in full sun with well drained soil, it stays compact and uniform without becoming woody or stretched out. Once established, it handles dry spells confidently, which makes it ideal for slopes, stone walls, and lean soil areas where other plants struggle. Its restrained growth makes it easy to integrate into both formal layouts and relaxed, naturalistic settings.

Why We Like It (Our Trials)

In our Upstate SC testing gardens, ‘Purity’ has been remarkably steady. Each Spring, it returns with consistent growth and a uniform bloom display that feels intentional rather than patchy. The flower coverage is dense but controlled, and the plants do not collapse under their own weight. The evergreen foliage holds up through Winter, maintaining color and form without significant dieback. That kind of foliage quality matters just as much as the bloom show.

What truly sets ‘Purity’ apart is its long term reliability. Year after year, it keeps a clean mound without splitting in the center or requiring aggressive pruning to rejuvenate it. I appreciate plants that do not demand constant correction to look good. Whether planted in larger sweeps across a slope or used more precisely along a refined garden border, it maintains the same dependable structure. For gardeners who want a classic, no drama groundcover that performs consistently and looks intentional in every season, ‘Purity’ delivers exactly that.

Purity vs. Other Candytuft Varieties

Iberis ‘Purity’ stands out as the most classic and timeless Candytuft in this group. Its bright, pure white flowers create a clean, uniform spring display that feels crisp and architectural, especially when planted in repetition. Compared to ‘Snow Flurries’, Purity feels slightly more restrained and traditional, while Snow Flurries leans heavier on sheer flower density. The evergreen foliage and balanced, mounded habit give it strong year-round structure, making it as valuable outside of bloom as it is during peak flowering.

Against ‘Candy Sorbet’, Purity is cleaner and more formal, lacking the blush tones but offering a more consistent white presentation. Where Candy Sorbet adds softness and color variation, Purity delivers simplicity and reliability that works in almost any design. Gardeners choose Purity for a classic white groundcover that never feels trendy or dated.