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Rock Cress

Botanical Name
Arabis caucasica
Min Zone
4
Max Zone
7
Height
6 to 12 inches
Width
6 to 18 inches
Flowers
Early spring: 4 petals of white, pink, blue or purple
Light
Full sun
Soil
Medium to dry, very well-drained, sandy
Planting & Care
  • Drought tolerant
  • Requires well-drained soil
  • Plants lose vigor and decline in the heat of Zone 7 and higher
  • Cut back plants after flowering to promote fuller growth
  • Divide every 2 or 3 years after flowering or in fall
  • Softwood stem cuttings taken right after flowering is a reliable method of propagation
Problems
Club root, downy mildew, white rust, aphids
Varieties
  • Snow Cap - prolific white flowers
  • Rosabella - rose colored blooms
  • Flore Pleno - late blooming, double white flowers
  • Variegata - white flowers above cream striped foliage
  • Red Sensation - bright red flowers
  • Rose Delight - rose-purple blooms

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Mequon Nature Preserve
Mequon, WI
 

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Sanger House Gardens
Milwaukee, WI
 

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Pasquesi Home & Gardens
Lake Bluff, IL

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