General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Maximum recommended zone: Zone 11
Plant Height: 3 to 12 feet
Plant Spread: 2 to 3 feet
Leaves: Unusual foliage color
Evergreen
Other: Narrow, gray-green
Flowers: Showy
Flower Color: Blue
Bloom Size: Under 1"
Flower Time: Spring
Late spring or early summer
Summer
Uses: Suitable as Annual
Wildlife Attractant: Bees
Butterflies
Hummingbirds
Resistances: Deer Resistant
Drought tolerant
Propagation: Seeds: Needs specific temperature: 55ºF-65ºF
Days to germinate: 2 to 3 weeks
Depth to plant seed: Surface sow, covering with a very thin layer of soil.
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots

Image
Common names
  • Tower of Jewels
  • Tree Echium
  • Giant Viper's Bugloss

Photo Gallery
Location: Chicago Botanical Gardens
Date: 2017-05-22
Location: Chicago Botanical Gardens
Date: 2017-05-22

Photo courtesy of Annie's Annuals and Perennials
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HamiltonSquare On January 24, 2018 Obtained plant
From Annie's Annuals and Perennials. $8.95
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