Rock candytuft (Iberis saxatilis)

Rock candytuft

Rock candytuft has showy flowers and a sprawling habit. It is called Rock candytuft for its growth on rocks with candytuft a reference to Candia, which is the ancient name for its native island home. It is widely used in raised beds, rock gardens, and as a cover for walls. It is drought, rabbit, and deer tolerant.

Scientific classification

Species

Rock candytuft (Iberis saxatilis)

Mustards, capers, and allies

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Perennial, Biennial

Lifespan

Herb

Plant Type

Summer, Fall

Bloom Time

8 cm to 15 cm

Plant Height

23 cm to 45 cm

Spread

9 mm to 1.2 cm

Flower Size

Images of Rock candytuft

Care Guide for Rock candytuft

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Rock candytuft thrives in rocky substrates with infrequent moisture. It prefers well-drained conditions and is moderately drought-tolerant. Weekly watering is optimal, particularly during its active growth season, making outdoor cultivation ideal to benefit from natural rain patterns for lush flowering.

Fertilize: For rock candytuft, use a balanced or phosphorus-rich fertilizer every 4-6 weeks during the growing season, reducing in fall. Apply carefully to moist soil, avoiding foliage contact. Adjust quantities based on plant size and age, and reduce winter feeding for robust growth and abundant blooms.

Pruning: Rock candytuft is an evergreen perennial with white flowers. Prune lightly after flowering in early spring or late winter to encourage bushier growth and blooms. Avoid over-pruning, and use sanitized tools to prevent disease. For detailed guidance, consult sources like the Royal Horticultural Society.

Propagation: Rock candytuft is an alpine species valued for its lush foliage and white flowers, ideal for rock gardens. Propagate using healthy stem cuttings with leaf nodes in a well-draining, moisture-retentive substrate. Keep in bright, indirect light, and water gently to prevent waterlogging.

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