Blue Sea Kale

Blue Sea Kale

Crambe maritima

This upright perennial bears fragrant white flowers in summer.

  • White flowers are produced in summer, providing colour through the bloom season.
  • Upright clump, reaching 90 cm at maturity; divide every three to four years to maintain vigour.
  • Best in full sun to partial shade to full shade with moist, average, dry, well-drained soil.
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Well-drained, Moist, Dry, Average
Drought Tolerant
✓
Hardiness Zone
4 – 4
Mature Height (meters)
0.6 – 0.9
Mature Spread (meters)
0.5 – 0.6
Growth Rate
Medium
Flower Colour
White
Foliage Colour
Blue-green
Bloom Time
Summer
Habit
Upright
Deer Resistant
✓
Rabbit Resistant
✓
Pollinator Friendly
✓
Fragrant
✓
Landscape Uses
Rock garden
Growing & Maintenance Tips
Grows best in a rich, fertile, average-to-moist soil that is well-drained. Thrives in full sun, but does well in partial shade. Once established, it becomes quite drought tolerant due to the deep taproots. Best left undisturbed once established. Naturally found along seashores and is considered to be salt tolerant.

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