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Lobelia siphilitica

Native Plants

Great Blue Lobelia

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This native perennial heralds the end of summer. Its showy, blue flowers, borne on a 1-3’ tall stems, are a must for the naturalized garden. Great blue lobelia flourishes in moist soil with filtered shade but will adapt to drier conditions with more shade. This herbaceous plant is easy to grow from seed and frequently self-sows. Lanceolate serrated leaves alternate along the stem, culminating into tiny bracts amidst the bell shaped blooms. Lobelia siphilitica is tolerant of acid to neutral conditions. Grow great blue lobelia with Eurybia divaricata, Chelone obliqua, and Eutrochium fistulosum as they enjoy the same cultural conditions and will provide varying heights in the perennial border.

More Details

  • Plant Type
  • Sun/Shade Conditions
    filtered-shade, partial-shade 
  • Foliage Character
  • Soil Moisture
    average, dry, moist, wet 
  • Flowering Period
    early-fall, late-summer
  • Soil PH
    acidic, adaptable 
  • Flower Color
    blue, purple 
  • Summer Foliage Color
  • Fall Foliage Color
  • Fruit/Seed Color
    green, tan