Arabis--Rock Cress

By The Old House Web

Arabis--Rock Cress

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The Rock Cresses are good plants for the rock garden. They grow 4 to 12 inches tall and need full sun. Any well drained soil is suitable although sandy soil is preferred. The plants may winter kill on heavy soil. Shear the plants each year after flowering to encourage compactness and a second bloom.

Rock Cress are propagated by seed, division and cuttings. Softwood stem cuttings are taken and rooted in the summer soon after the flowers fade. The plant is divided in September or in spring. The seed may need stratification and germinates in 20 to 25 days at 70 degrees. Light is necessary for germination.

Arabis alpina Grows 4 to 6 inches tall but is not as ornamental as A. caucasica.

Arabis caucasica (albida)--Wall Cress Grows 8 to 12 inches tall and has white flowers. Plant 10 to 12 inches apart.

Propagation is by division, cuttings or seed. Division is done in late summer or spring. Seed is a slow method to get new plants. The seed germinates in 3 to 4 weeks at 68 degrees.

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Arabis alpina - 88K
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