Mertensia maritima ssp. asiatica (Oysterleaf)

Mertensia maritima ssp. asiatica, commonly known as Oysterleaf or Sea Bluebells, is a low-growing, herbaceous perennial prized for its unique, fleshy, silvery-blue leaves that resemble succulent foliage. The leaves are edible, with a mild oyster-like flavor. In late spring to early summer, it produces clusters of bell-shaped, sky-blue flowers that add ornamental charm. This plant thrives in coastal or alpine environments and is ideal for rock gardens or as a ground cover.

Mertensia maritima ssp. asiatica thrives in well-drained, sandy, or rocky soils and prefers consistently moist conditions, mimicking its natural coastal habitat. It is drought-tolerant once established and resistant to deer and rabbits. The plant is slow-growing and benefits from a protected location if grown outside its native range. It pairs beautifully with other low-growing perennials like sedums, alpine plants, or ornamental grasses for a naturalistic garden display. Regular watering during dry periods ensures healthy growth and vibrant foliage.

Sun Requirements:

Full Sun to Partial Shade. Prefers full sun for optimal growth but tolerates partial shade, especially in warmer climates.

Maximum Growth Height:

6–12 inches (15–30 cm), with a spread of about 12–18 inches (30–45 cm).

Bloom Month:

May to July. Blooms in late spring through early summer, offering delicate blue flowers.