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Northwest Blooms · Groundcovers

Arabis alpina subsp. caucasica ‘Snowcap’

Snowcap Rock Cress

Arabis alpina subsp. caucasica ‘Snowcap’
Family
Brassicaceae
Height
6 to 12 inches
Width
12 to 18 inches
Flower color
Pure white
Foliage color
Dark green
Bloom time
Early to mid-spring
Light
Full sun to partial shade
Water
Moderate
Maintenance
Low
Growing zone
4 to 7
Wildlife
Bees, butterflies

About this plant

Arabis alpina subsp. caucasica 'Snowcap' is a low-growing perennial prized for its profusion of small, pure white flowers that blanket the foliage in early spring. This compact cultivar forms a dense mat of evergreen foliage that remains attractive year-round, with narrow, dark green, slightly serrated leaves creating a neat, uniform appearance. In early to mid-spring, 'Snowcap' produces an abundance of small, four-petaled flowers that completely cover the plant, creating a stunning display and attracting bees and butterflies. Versatile and thriving in a variety of garden settings, it is well-suited for rock gardens, border edging, and ground cover. 'Snowcap' prefers well-draining soil and full sun to partial shade, tolerating some shade in hotter climates. Relatively low-maintenance, it requires only occasional watering once established. 'Snowcap' adds beauty and elegance to the early spring garden with its profusion of white flowers and attractive foliage.

Works well in

Pollinator Gardens · Dear Prone Areas · Borders · Rock Gardens

Companion plants

Candytuft · Creeping Phlox · Dianthus · Sedums · Aubrietas · Helianthemums

Design tip

Allow this compact groundcover to spill gently over retaining walls, stone steps, or raised beds where its cascading habit softens hard edges. The flowing effect creates a natural transition between masonry and surrounding garden plantings while adding early-season charm.