|Another wonderful plant to add to the garden if you want to attract hummingbirds. Crimson flowers are tubular and grow all summer. Leaves are lance-shaped and are reddish purple. Stems are reddish purple. This compact clump-forming, perennial requires some shade and moist conditions. Perfect along streams or where conditions are moist to boggy and acidic. Can grow to a height of 3 feet and 1 foot wide.