Arabis alpina subsp. caucasica Snowball

The Arabis caucasica 'Snowball' is a variety of rock cress that is remarkably compact and floriferous, with its vegetation disappearing in spring under a multitude of pure white flowers, forming a snowball-like shape in flower beds. This perennial ground cover is highly effective in preventing the growth of weeds. It is also decorative with its tiny olive-green foliage that remains even in winter. It is ideal for covering walls, climbing slopes, covering the base of hedges, dressing potted plants, or bordering gravel paths.

The Arabis alpina subsp. caucasica 'Snowball' belongs to the Brassicaceae family. Its wild ancestor is a very hardy plant native to temperate regions of the northern hemisphere. "Snowball," sometimes found under Arabis caucasica 'Schneeball', was recently selected in Germany for its dense, low habit and excellent floribundity. This creeping perennial forms a cushion that spreads through rhizomes. Its growth is relatively slow. It forms a dense ground cover, reaching 15-20 cm (6-8in) in height, with a minimum spread of 35 cm (14in), theoretically unlimited. The flowering period is from April to June, depending on the climate. Its countless small, slightly fragrant flowers are grouped in generous clusters. They bloom above the olive-green foliage. The leaves form compact rosettes, are oval and jagged, and measure 2 cm (1in) in length.

Perfect rockery plants, these robust rock cress make excellent ground covers along borders, on a patio, for walls or on slopes. Arabis caucasica 'Snowball' is a lovely ground cover plant that can quickly spread and prevent the growth of weeds. Planting it in a rock garden with delicate plants is not recommended. However, it is perfect for covering the base of shrubs or hedges, even in partially shaded areas, and is as easy to maintain as ivy. Its appearance resembles drapery on stones and walls, making it a beautiful addition to any garden. The rock cress has excellent longevity and is easy to grow. It will flower each year at the same time as tulips and other spring bulbs