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Gerald L. Klingaman
(Vanhoutte Spirea)
A cold-hardy deciduous shrub introduced to gardens in the mid-nineteenth century and still prized by gardeners, this hybrid of Spiraea cantonensis and S. trilobata evokes memories of grandmother when its arching branches are laden with clustered white flowers in late spring and early summer. The dense domed flowerheads attract bees, butterflies, and ants in search of pollen and nectar. A twiggy plant that spreads by root suckers, this medium-sized shrub has small, blue-green, somewhat...