Blue-Green Foliage
Produces large, attractive blue-green leaves that add distinctive texture to garden spaces.
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Maritima Crambe (Crambe maritima), commonly known as sea kale, is a perennial coastal plant recognized for its broad blue-green leaves, fragrant white flowers, and edible young shoots. It is suitable for coastal gardens, ornamental borders, and edible landscapes. This hardy plant grows best in sunny locations with well-drained soil.
Produces large, attractive blue-green leaves that add distinctive texture to garden spaces.
Produces clusters of small, fragrant white flowers during its flowering season.
Young blanched shoots and leaves are traditionally harvested and prepared as vegetables.
Tolerates coastal conditions and grows well in sunny locations with well-drained soil.
| Scientific Name | Crambe maritima |
| Common Name | Sea Kale; Seakale; Maritime Crambe |
| Plant Family | Brassicaceae |
| Seed Type | Vegetable and Ornamental Plant Seeds |
| Plant Type | Perennial Herbaceous Plant |
| Growth Habit | Clump-forming perennial |
| Foliage Color | Blue-green to gray-green |
| Flower Color | White |
| Plant Height | Approximately 2–3 feet |
| USDA Hardiness Zones | Generally Zones 4–8, depending on growing conditions |
| Planting Season | Spring, following recommended seed preparation |
| Germination Time | Variable; depends on seed preparation and growing conditions |
| Germination Temperature | Cool to moderate temperatures; follow supplier instructions |
| Sunlight | Full sun to partial shade |
| Soil Requirements | Well-drained, sandy or loamy soil |
| Watering | Moderate watering; avoid prolonged waterlogging |
| Blooming Season | Late spring to early summer |
| Uses | Edible Gardens, Coastal Landscapes, and Ornamental Borders |
Add Maritima Crambe to your garden for its attractive blue-green foliage, fragrant white flowers, and edible young shoots. With proper seed preparation, sunny conditions, and well-drained soil, this perennial plant can become a distinctive addition to edible and coastal gardens.
Find useful information about sea kale seed germination, edible shoots, and growing requirements.
Crambe maritima seeds have a hard outer casing that can make germination slow or irregular. Follow the supplier's instructions for preparing the seed casing, which may involve carefully removing the outer covering or applying an appropriate treatment. Sow in a well-drained growing medium and maintain suitable moisture and temperature.
Yes, sea kale is a traditional edible perennial vegetable. Its young shoots are commonly blanched to produce tender growth, while young leaves can also be prepared as a vegetable. Harvest only positively identified plants and use appropriate food preparation methods.
Sea kale shoots can be blanched by covering the emerging growth with an opaque container or purpose-made forcing pot to exclude light. This encourages pale, tender shoots with a milder flavor. Remove the cover when the shoots reach a suitable harvesting size.