EVERGREEN

Plant Encyclopedia

Echium wildpretii

Echium wildpretii (tower of jewels)

Japanese name: エキウム ウィルドプレッティー
Scientific name: Echium wildpretii

Echium wildpretii

[Overview]
A large biennial or short-lived perennial growing to 3 m tall.
The whole plant is densely hairy and looks grayish green.
The leaves are simple and opposite, lanceolate to linear, about 20 cm long, without petioles.
In the first year after germination it forms a rosette; from the second year on, scorpioid cymes gather in a conical cyme more than 1 m long at the stem tip, densely bearing many crimson flowers.
There are 5 stamens, which protrude far out of the flower.
The fruit is a schizocarp.

[Cultivation]
Propagate from seed.
It tolerates temperatures down to about -5°C, so it can overwinter outdoors in regions without frost.
It dislikes transplanting, so sow directly where it will grow, or sow in plastic pots and then plant out.
It prefers a sunny, well-drained, well-ventilated site, and sandy, slightly alkaline, poor soil suits it.
Take care not to let the soil become too wet; water thoroughly after the soil has dried.
Water collecting on the leaves can cause disease, so water at the base of the plant.
Too much fertilizer makes the plant leggy and worsens flowering and flower color, so apply only a slow-release fertilizer as a base fertilizer.

Details

Names
English: tower of jewels, red bugloss, Tenerife bugloss, Mount Teide bugloss
Japanese: エキウム ウィルドプレッティー、宝石の塔
Life form
Biennial, Perennial
Habit
Terrestrial
Planting (or sowing) season
April, May, September, October
Flowering season
April, May, June, July
Distribution or origin
Canary Islands
Growth form
Upright, Rosette
Height
3000 mm
Leaf shape
Simple leaf (unlobed), Linear
Leaf arrangement
Opposite
Inflorescence
Cyme, Scorpioid cyme
Flower color
Red
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seeds, Seedlings
Propagation
Seed
Sun exposure
Full sun
Water needs
Dry, Moderate
Soil needs
Required
Soil acidity
Alkaline, Neutral
Tolerance
Drought tolerance
Suitable uses
Potted plant
Hardiness zone
9a–11b
Japan Flower Trade Code
42552

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

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