Echium wildpretii
Tower of Jewels
Family |
Boraginaceae |
Genus |
Echium |
Species |
wildpretii |
Category |
Perennials, Woody |
USDA Hardiness Zone |
10 a - 10b |
Canadian Hardiness Zone |
Greater than 9a |
RHS Hardiness Zone |
H2 |
Temperature (°C) |
1 to 5 |
Temperature (°F) |
34 to 40 |
Height |
1.5 - 2.5 m |
Spread |
0.1 - 0.5 m |
General Description |
E. wildpretii has a single, unbranched stem reaching 2 m in height . Silver-blue leaves radiate densely from the base up, becoming more sparse as they reach the clustered flowers. |
Landscape |
City and courtyard gardens, flower borders and beds, wall side borders. |
Cultivation |
Under glass grow in a loam-based potting compost in full light. |
Shape |
Upright, erect, to spike-like. |
Pests |
Outdoors: slugs. Indoors: glasshouse whitefly, glasshouse red spider mite, and vine weevils. |
Habitat |
Coastal. |
Leaf Description |
Silver-blue, hairy. Measuring about 50 cm in length. |
Flower Description |
Small red flowers bloom in the early summer. |
Notable Specimens |
Chelsea Physic Garden, London, United Kingdom. |
Propagation |
Propagate by seed. |