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Lobelia siphilitica

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Lobelia siphilitica - Great Blue Lobelia

More About Lobelia siphilitica

  • Spikes of clear-blue flowers on unbranched stems
  • Tubular flowers are two-lipped
  • Finely toothed, oblong, green leaves
  • Attracts butterflies and hummingbirds
  • Bloom Time: July to September
  • Flower Height: 110 cm
  • Foliage Height: 60 cm

Interesting Notes:

Native to Ontario

 

All parts of this plant are TOXIC.

Zone:

4

Height:

50-60 cm

Spread:

45-60 cm

Colour:

Blue

Great Blue Lobelia Growing and Maintenance Tips

Showy blooms flourish in a moist soil with filtered shade, adapting to drier conditions with more shade. May self-seed under optimum conditions. 

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Lobelia siphilitica Characteristics

Full Sun
Full Sun
Partial Sun/Shade
Partial Sun/Shade
Attracts Butterflies
Attracts Butterflies
Attracts Hummingbirds
Attracts Hummingbirds
Fast
Fast
Rabbit Resistant
Rabbit Resistant
Deer Resistant
Deer Resistant
Cut Flower/Foliage
Cut Flower/Foliage
Native to Ontario
Native to Ontario
Poisonous
Poisonous
Bog or water garden
Bog or water garden

Soil Moisture

Moist to Average
Moist to Wet Soils

Growth Rate

Medium

Flowering Time

Summer

Habit

Upright
Clumping

Foliage Color

Green

Landscape uses

Woodland/woods edge
Naturalizing