Lobelia siphilitica

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Common Name:
Blue Cardinal Flower
Plant Type:
Sun to Part Sun
Hardiness Zone:
Bloom Color:
Bloom Time:
Garden Height:
24-36 Inches
Garden Spread:
12-18 Inches
  • Tall spikes of bright, true blue flowers through summer
  • Important nectar source for our native bumblebees
  • Great in bright woodland borders or at the edge of a pond or stream

Brilliant blue-purple spikes of flowers appear in the summer and last until early fall. Hummingbirds, butterflies, and songbirds are attracted to the fabulous flowers. Has an excellent upright habit and rich green foliage. It is deer and rabbit resistant. Beautiful plant for the landscape. Native to the eastern U.S.

Uses: Bog, Borders, Mass Planting, Native, Cut Flower, Rain Gardens, Woodland Gardens
Nature Attraction: Bees, Butterflies, Hummingbirds
Critter Resistance: Deer, Rabbit
Growth Habit: Upright

Homeowner Growing Tips: Grow Lobelia in full sun or partial shade in fertile, reliably moist soil. Apply a mulch for the winter.

Photo(s) courtesy of Swift Greenhouses, Inc.

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