Evergreen candytuft
Also known as
Candytuft, Perennial candytuft, Hardy candytuft, Iberian candytuft
Keep this plant’s care guide close at hand.
Get the appAbout Evergreen candytuft
Iberis sempervirens, commonly known as evergreen candytuft, is a low, mounding, woody-based perennial in the cabbage family (Brassicaceae). Native to rocky, calcareous slopes of southern Europe, it forms compact cushions of narrow, glossy, dark-green leaves that remain through winter in mild climates. In spring, flattened clusters of pure white, four-petaled flowers blanket the foliage, creating a striking, snow-like display for several weeks while attracting bees and other pollinators. Plants typically reach 15–25 cm tall and 30–60 cm wide, making them ideal for edging, rock gardens, wall crevices, and cascading over raised beds. Excellent drainage is essential; the species thrives in lean, neutral to alkaline soils and becomes drought tolerant once established. Light shearing after bloom promotes tighter growth and occasional rebloom. Evergreen candytuft is long-lived when sited correctly, but dislikes heavy, waterlogged substrates or intense summer humidity. Numerous cultivars offer enhanced floral density or improved habit, yet all share a strong preference for full sun and dry footing.
Taxonomy
Properties & Requirements
How to care for Evergreen candytuft
Water
Water weekly during the first growing season to establish deep roots, then shift to deep, infrequent irrigation. Allow the top 5–8 cm (2–3 in) of soil to dry between waterings; soggy conditions promote root and crown rot. In cool or rainy climates, established plants may need little supplemental water. Container specimens dry faster—water when the mix is dry halfway down. Avoid late‑day overhead watering to reduce foliar disease, especially in humid regions.
Light
Provide full sun for the heaviest bloom and tight, compact growth—target at least 6–8 hours of direct light daily. In hot-summer climates, very light afternoon shade can limit stress without meaningfully reducing flowers. Too much shade yields leggy plants with sparse flowering and increased disease pressure. Ideal placements include south- or west-facing borders, rock gardens, and wall tops where reflected light and warmth enhance spring displays.
Nutrients
A light feeder, Iberis sempervirens performs best in lean, well-drained soils and often needs no fertilizer in-ground. In spring, top-dress with a thin layer of compost or apply a low-rate, balanced, slow‑release fertilizer (e.g., 5‑5‑5 or 8‑8‑8). Avoid high nitrogen, which encourages floppy growth and reduces flowering. Container plants benefit from a half‑strength, balanced liquid feed monthly during active growth. Do not fertilize late in summer or in winter.
Temperature
Hardy in USDA Zones 4–9, evergreen candytuft tolerates substantial winter cold if soils drain freely. Foliage may bronze or suffer minor dieback in severe freezes, rebounding in spring. Best growth occurs between 4–24°C (40–75°F); heat above 29°C (85°F) is tolerated with full sun, airflow, and dry footing. Prolonged winter wet is more damaging than frost. In very cold locations, position near walls or use gravel mulch to protect crowns.
