Lobelia cardinalis Black Truffle

Cardinal Flower

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Plant Code: LOBT

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Add black tie elegance to your garden with the deep purple-black foliage and bold red flowers of this enticing native Cardinal Flower. Dramatic and truly red flower stalks rise from glossy black rosettes of foliage.

Late season and warmer temps bring iridescent maroon foliage. Use like an upright Coleus in a sunny border. A perfect choice for a rain garden.


Type: Perennials
Height: Tall 3-4'
Spacing: Plant 2-3' apart
Bloom Time: Mid-Summer to Early Fall
Sun-Shade: Full Sun to Half Sun / Half Shade
Zones: 5-8   Find Your Zone
Soil Condition: Normal, Clay
Flower: Red/Burgundy
Patent: PP25,687
Pot Size: 3.5" square x 4" deep

Features to Note

  • Beneficial for Pollinators
  • Attracts Butterflies
  • Good for Cut Flowers
  • Deer Resistant
  • Attracts Hummingbirds
  • Wet Site Tolerant

Lobelia General Information

Lobelia are perfect for the spot in your garden that just stays too wet for most plants. Spires of colorful hood-like flowers open from bottom to top. Will naturalize along ditches and streams. Butterflies like them too. Idaho has restricted all potted plant material from being shipped into Idaho at this time.

Lobelia Plant Care

Prefers fertile, evenly moist soil. Can be divided every 2-3 years in spring. Allow to self sow. Winter over with stems on. Can be pinched back before flowering to produce more compact plants. May benefit from light winter mulch north of zone 6.