Cardinal Flower
Lobelia
Cardinal Flower
In the dog days of August, just when the border is not looking so lively, this genus of colorful, stately selections rejuvenates the garden with spectacular leafy flowering spires, attracting crowds of eager hummingbirds. Perfect in meadow plantings, these sturdy herbaceous perennials appreciate a well drained site, a light winter mulching, rich, moist soils and partial shade in warm climates, except for Lobelia tupa and Lobelia laxiflora, which like it hot and on the dry side.
If you feel like Lobelia foliage occasionally looks a little unkept, you may be interested in this small-statured Dan Heim Lobelia cardinalis and Lobelia siphilitica hybrid. Garnished with tubular two-lipped sterile flowers, the dense long-lasting grape-purple spikes rise on sturdy upright stalks above a good-looking rosette of toothed dark green foliage. Awarded Top-Performing-Perennial status by the Massachusetts Horticultural Society, ‘Grape Knee-Hi’s trim lavishly-hued persona can hobnob with Hemerocallis ‘Corky’ and Geranium ‘Album’ in adequately moist niches. (pp#13,264)
Blooms July–August
Size: 18" – 2' 0" high x 12" – 18" wide.
Hardy to zone 6.
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