|Another wonderful plant to add to the garden if you want to attract hummingbirds. White flowers are borne of racemes from summer to fall. Leaves are linear and toothed, mid- to dark-green. 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.