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)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 12-16 inches
Leaves: Malodorous
Fruit: Other: Small 3-celled capsule
Flowers: Showy
Flower Color: Blue
Other: With yellow eye
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Underground structures: Taproot
Suitable Locations: Alpine Gardening
Wildlife Attractant: Bees
Resistances: Deer Resistant
Pollinators: Bumblebees
Bees

Image
Common names
  • Jacob's Ladder
  • Showy Jacob's Ladder
  • Jacob's-Ladder
  • Skunk Leaf

Photo Gallery
Location: Hortus Botanicus Akureyensis - Akureya - Iceland
Date: 2019-07-29
Location: My Northeastern Indiana Gardens - Zone 5b
Date: 2013-07-22
From seed started warm, then moved to refrigerator.
Location: Forgetmenot Ridge, Kananaskis P.P, Alberta; elevation ~2200m, alpine zone.
Date: 2010-07-15
Location: Forgetmenot Ridge, Kananaskis P.P, Alberta; elevation ~2200m, alpine zone.
Date: 2010-07-15
Location: My garden, Calgary, Alberta, Canada; zone 3.
Date: 2010-06-04
Location: My Northeastern Indiana Gardens - Zone 5b
Date: 2013-10-06
Location: Akureyri Botanical Gardens
credit: Hedwig Storch
This plant is tagged in:
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Comments:
  • Posted by chelle (N.E. Indiana - Zone 5b, and Florida - Zone 9b - Zone 9b) on May 25, 2013 7:43 PM concerning plant:
    Non-fresh seeds of this plant did not germinate warm for me. After 3 weeks I moved them into the refrigerator where they did germinate in about 10 days.

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