Photo by Melody

PlantFiles: Tower of Jewels
Echium wildpretii subsp. trichosiphon

Family: Boraginaceae
Genus: Echium (EK-ee-um) (Info)
Species: wildpretii subsp. trichosiphon

2 members have or want this plant for trade.

Tropicals and Tender Perennials

Unknown - Tell us

24-36 in. (60-90 cm)

USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Medium Blue

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant may be considered a protected species; check before digging or gathering seeds
This plant is resistant to deer

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By suesue45
Thumbnail #1 of Echium wildpretii subsp. trichosiphon by suesue45


No positives
1 neutral
No negatives

Gardeners' Notes:

Neutral pattymh On Jun 10, 2012, pattymh from Grass Valley, CA wrote:

I purchased four one gallon Tower of Jewels from Green Acres Nursery in Roseville Ca knowing that they may not tolerate our cold winters. I'm going to keep my fingers crossed. Has anyone grow these plants in Zone 7...Grass Valley Ca? I plan on covering them when we get really low temps but I would like any suggestions. They are such an incredible plant!


This plant has been said to grow in the following regions:

Clarksburg, California
El Macero, California
Fairfax, California
Grass Valley, California
Hemet, California

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