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Rock Cress

Arabis caucasica
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Arabis caucasica (Rock Cress) — botanical photograph
Pl. EA87 — Arabis caucasica
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Overview

Rock Cress (Arabis caucasica) is a resilient perennial forb or subshrub that thrives in diverse environments across the Mediterranean and Middle East, including Albania, Algeria, Bulgaria, Greece, Iran, Italy, and Turkey. This plant belongs to the Brassicaceae family and can be found growing on rocky slopes and other well-drained soils with a pH between 7.5 and 8. Rock Cress is known for its ability to adapt to various conditions, making it suitable for gardens in USDA zones 4-9. The edible leaves of Rock Cress are often used in culinary applications, adding a unique flavor to salads and soups due to their slightly bitter taste. The plant thrives in well-drained soils that can be light (sandy), medium, or heavy (clay) and prefers moderate sunlight exposure. It is particularly hardy in dry to moist conditions, making it an excellent choice for gardens with similar requirements. Rock Cress is valued not only for its culinary uses but also as a ground cover plant due to its low-growing habit. Its ability to grow in diverse environments, from the rocky slopes of the Caucasus to Mediterranean coastlines, showcases its adaptability and resilience. While primarily used for its ornamental and edible qualities, Rock Cress can be propagated through seed sowing or division of established plants. When cultivating Rock Cress, it is important to ensure that the soil remains well-drained and avoid waterlogged conditions. The plant grows to about 0.2 meters tall and thrives in light (8/10) exposure, making it adaptable to various garden settings. Its introduction into regions such as Austria, Belgium, British Columbia, Canada, and parts of Europe further highlights its versatility. While Rock Cress is not known for medicinal uses, its distinctive features—such as its ability to grow in diverse environments and its edible leaves—make it a valuable addition to gardens and culinary applications.

Quick answers

What is Rock Cress?

Rock Cress (Arabis caucasica) is a resilient perennial forb or subshrub that thrives in diverse environments across the Mediterranean and Middle East, including Albania, Algeria, Bulgaria, Greece, Iran, Italy, and Turkey.

Growingconditions · propagation · uses
V

Cultivation

Rock Cress thrives in light to moderate shade and prefers well-drained soils that are either sandy, medium, or clayey. It is hardy in temperate regions from USDA zones 4-9. Keep the soil moist but not overly wet; avoid waterlogged conditions. Propagate through seed sowing or division of established plants. Harvest its edible leaves for use in salads and other dishes. The plant grows to about 0.2 meters tall and is a perennial forb/herb, making it a versatile addition to gardens.
Light
8/10
Water
Dry, Moist
Soil
Light (sandy), Medium, Heavy (clay)
Hardiness
4-9
Life cycle
Perennial
Habit
Forb/herb, Subshrub
Mature size
0.2 m tall
Soil pH
7.5–8
For first-time growers

How to grow Rock Cress for the first time

8steps

Start with Rock Cress as a simple, low-maintenance perennial for your garden.

  1. 1

    What you'll need

    Rock Cress seeds or small plants, a trowel, and a watering can.

  2. 2

    Best time to plant

    Plant Rock Cress in spring after the last frost or in fall before the first freeze.

  3. 3

    Soil and container prep

    Choose a well-draining soil with a pH between 7.5 and 8, and prepare your garden bed by loosening the soil.

  4. 4

    Sowing or transplanting

    Direct sow seeds in the ground or start them indoors about 4-6 weeks before planting outside. Transplant young plants if needed.

  5. 5

    First two weeks

    Water regularly to keep the soil moist but not waterlogged, and protect from extreme heat or cold.

  6. 6

    Ongoing care

    Provide light watering as needed, especially during dry spells. Deadhead spent flowers to encourage more blooms.

  7. 7

    Harvest or pruning

    Prune back any leggy growth in early spring and remove dead leaves throughout the growing season.

  8. 8

    Common mistakes

    Overwatering, planting in heavy soil, neglecting to protect from extreme weather conditions.

VI

Edible & utility

Edible parts:Leaves
Edible uses: The leaves of Rock Cress (Arabis caucasica) are edible and can be consumed fresh or dried. They are typically used in salads for their slightly bitter taste or added to soups and stews for flavoring. The plant thrives in well-drained soil with a pH between 7.5 and 8, making it suitable for gardens with similar conditions.
Other uses:Ground cover
Contextrange · companions · related
VII

Distribution

21 native · 21 introduced
Distribution across3 continents· 21 native· 21 introduced
Europe17 regions
native (6)AlbaniaBulgariaGreeceItalyRussiaUkraine
introduced (11)AustriaBelgiumDenmarkFranceGermanyNorwayPortugalSpainSwedenSwitzerlandUnited Kingdom
Asia7 regions
native (7)IranIraqPalestineSaudi ArabiaTurkeyTurkmenistanYemen
Africa3 regions
native (2)AlgeriaMorocco
introduced (1)Egypt
Broader regions
native:East Aegean Is., Kriti, Lebanon-Syria, Transcaucasus, Yugoslavia
introduced:British Columbia, Czechoslovakia, Illinois, Michigan, New Brunswick, New York, Ontario, Québec, Yukon
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Specimen gallery

1 image
Arabis caucasica (Rock Cress) — botanical photograph
Rock Cress (Arabis caucasica)
XI

Explore further

XII

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