Sea Kale

Crambemaritima

Family
Brassicaceae (brass-ih-KAY-see-ee)
Genus
Crambe (KRAM-bee)
Species
maritima (muh-RIT-tim-muh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
24-36 in. (60-90 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
N/A
Bloom Color
Cream/Tan
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Dark/Black
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; direct sow after last frost
By stooling or mound layering
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Birmingham, Alabama

Denver, Colorado

Falmouth, Maine

Great Barrington, Massachusetts

Port Norris, New Jersey

Marion, North Carolina

Pennsburg, Pennsylvania

Norwich, Vermont

Blaine, Washington

Twin Lakes, Wisconsin

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Featured Videos

Gardener's Notes:

4
positives
0
neutral
0
negative
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J
Norwich, VT (Zone 5a) | September 2011 | positive

I planted 4 sea kales in my garden (Norwich, Vermont, zone 4b/5a) this past spring into raised beds created by sheet mulching over lawn. ...Read More

D
D
(Zone 7b) | April 2009 | positive

Quite a common plant on the shingle beaches of the UK coast.

S
Tellico Plains, TN (Zone 7b) | June 2005 | positive

I love this plant. Hard to believe but it has the nicest 'evening' scent that perfumes the whole garden . Almost burumansia -like in frag...Read More

S
S
(Zone 8b) | June 2005 | positive

Dutch name is Zeekool..(transl. Sea Cabbage)..It is flowering wild in Dutch coastal areas.. highly endangered and protected.. I have 'nt ...Read More

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