General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Wet
Wet Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 12 - 18 inches
Plant Spread: 9 - 12 inches
Flowers: Showy
Flower Color: Purple
Other: Lilac
Flower Time: Summer
Late summer or early fall
Other: July - September
Uses: Cut Flower
Will Naturalize
Wildlife Attractant: Butterflies
Resistances: Deer Resistant
Toxicity: Other: All parts of plant are poisonous if ingested
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Other: Divide plants in Spring
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Patent/Plant Breeders' Rights: PP15,236

Common names
  • Great Blue Lobelia
  • Great Blue Cardinal Flower

Photo Gallery
Location: Eagle Bay, New York
Date: 2021-08-20
Great Blue Lobelia (Lobelia siphilitica) Great Blue Cardinal Flow
Location: My zone 5 garden.
Date: 2017-07-28

Courtesy Gardens in the Wood of Grassy Creek
  • Uploaded by vic

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