Aquilegia vulgaris ' William Guinness' is a striking variety of Columbine. From the shape of its flowers, it is easy to see why it is sometimes dubbed ' Granny's Bonnet', although the black blooms with white corolla are certainly more fashionable than the average pensioner's headwear! Indeed, these unusual colours give the plant the alternative name of Aquilegia ' Magpie' & you will certainly want to collect several of these hardy perennials which are attractive to beneficial garden insects such as bees & butterflies. After it has flowered in the late spring, the green foliage & appealing seedheads of Aquilegia ' William Guinness' remain an attractive addition to sunny or partially shady gardens throughout the season.