'Hummingbird' Summersweet has very fragrant white flowers that cover the plant in June and July. This selection is a compact form that is both wet site and salt tolerant. It spreads vigorously by rhizomes to form colonies. The leaves are narrower than the species and the fall color is lovely shades of golden yellow. Clethra alnifolia 'Hummingbird' is an introduction from Calloway Gardens, Pine Mountain, GA where it was planted along Humminbird Lake, hence the name.