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Great Blue Lobelia

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Lobelia siphilitica

Cousin to the red blooming Cardinal Flower, Great Blue Lobelia grows spikes covered in purple/blue (and rarely white) blooms from the bottom up giving a long lasting bloom time. Flowers are loved by bumblebees, bees and hummingbirds. In the fall, green foliage turns yellow - reddish purple.

Great Blue Lobelia is easy to grow, tolerating full to part shade and medium to wet soils. It is generally avoided by herbivores and makes a lovely cut flower.

Size:

Lobelia siphilitica

Cousin to the red blooming Cardinal Flower, Great Blue Lobelia grows spikes covered in purple/blue (and rarely white) blooms from the bottom up giving a long lasting bloom time. Flowers are loved by bumblebees, bees and hummingbirds. In the fall, green foliage turns yellow - reddish purple.

Great Blue Lobelia is easy to grow, tolerating full to part shade and medium to wet soils. It is generally avoided by herbivores and makes a lovely cut flower.

Companion Plants: Swamp Milkweed, Blue Flag Iris, White Turtlehead, Closed Bottle Gentian, Morning Star Sedge, Blue Vervain, Virginia Bluebells, Wild Columbine

  • Full sun - Part Shade

  • Wet - Average

  • 3 feet

  • Purple/Blue

  • July, August, September, October

Pollinator Favourite | Bird Favourite | Deer Resistant | Home Landscaping Favourite | Great Cut Flower | Juglone Tolerant