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plant profile sea kale

Plant Profile: Sea Kale

Sea What?

Sea Kale in its native habitat. Image credit:

Sea Kale! Crambe maritima

If you are looking for a low-maintenance plant that serves as an attractive element in your garden and is also edible, sea kale is a great plant to land on. Sea kale’s group epithet, maritima, refers to its native shores of Europe and Asia Minor, but it does not require a coastal environment to survive. The genus Crambe, comes from the Greek word krambh which was the name of a cabbage-like plant in ancient Greece, and gardeners will recognize this plant as a member of the Brassicaceae family.

Rediscovering an Old Favorite

Sea kale was a favorite in Victorian times, but then almost disappeared. A renewed interest in heirloom and perennial vegetables has given sea kale a resurgence, and it is celebrated by chefs across the British Isles. The early spring shoots that push up between January and March are often color blanched, or etiolated, by blocking the sunlight with overturned buckets or plastic coverings. Blanched or sauteed, they taste like a cross between asparagus and celery and are often served with classic asparagus sauces like hollandaise or lemon butter. Later in the year, the flower bud clusters can be harvested like broccoli rabe, and the mature sea kale leaves can be fried or added to dishes that call for kale, spinach, or chard.


Home gardeners can use buckets to blanch the first spring shoots for harvest. Image credit: Wikipedia


This versatile perennial is best grown in sandy to gravelly, well-drained loam in full sun, although it does tolerate light shade and some drought. The plant habit is a spreading basal mound that grows 30-36” tall and to 24-30” wide. With a mounding crown of fragrant white flowers that attract pollinators, it adds a stately presence to a vegetable patch or ornamental garden.


Sea kale and welsh onion (Allium fistulosum) growing as companion plants at RDG client Wildside Cottage and Gardens in Conway, MA.

Sea Kale Facts:


– Rachel Lindsay, Associate Designer

This Post Has 2 Comments

    1. Hi Fawn – I’m not sure if they are particularly beneficial to each other as companion plants. Mint and sea kale’s preferred growing conditions differ, but that doesn’t mean you shouldn’t try it. Both are pretty adaptable. If you’re growing them in-ground (as opposed to a pot or raised bed), you may just want to keep the mint in check.

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