Large Flowered Penstemon

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     Penstemon grandiflorus possesses one of the largest flowers of our North American Penstemons.  The Beardtongue produces a profusion of lavender flowers in late spring. Easily one of the showiest of all Penstemons, it is a favorite nectar source for hummingbirds. Grows two to four feet tall on dry, sandy or rocky soil. Requires perfect drainage, and does not take kindly to clay soil.