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Perennials > Crambe > Crambe cordifolia > Crambe cordifolia

Crambe cordifolia


Colewort




Family
Brassicaceae
Genus
Crambe
Species
cordifolia
Category
Perennials
Pronunciation
USDA Hardiness Zone
7b - 8a
Canadian Hardiness Zone
7b
RHS Hardiness Zone
H5 (Observed growing well in H7 in a protected location)
Temperature (°C)
-15 to -10
Temperature (°F)
5 - 14
Height
1.2-1.8 m
Spread
60-90 cm
Photographs
Description and Growing Information
Flowering Period
June
Landscape
This architectural plant can be used in the mid section of the border or in the back, either as a focal plant or in larger grouping if space is available.
Cultivation
It is easy to grow in any soil, in light shade or sun.
Growth
Medium
Habitat
Caucasus region, Afganistan and Iran.
Leaf Description
The heart-shaped leaves are large, 50 cm across and coarse. They form a massive, dark green rosette.
Flower Description
In the early summer, 2 - 3 tall flowering stalks appear bearing numerous white flowers. When in flower, Crambe cordifolia looks like a spectacular white cloud suspended above the leaves.
Propagation
From seed; direct sow outdoors in autumn or winter sow in containers in a cold frame or unheated greenhouse. Pencil thick root cuttings in early spring also work.
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