'Munchkin' was developed by the U.S. National Arboretum’s shrub breeding program in McMinnville, Tennessee from seedlings obtained from a 1997 open-pollination ofHydrangea quercifolia ‘Sikes Dwarf’. Released in 2010, it is a dwarf, compact shrub with dark green foliage that turns mahogany red in fall. Its white, 6.5 in. inflorescences are held upright above the foliage and gradually turn pink as they age. ‘Munchkin’ grows 3 to 4.5 ft. tall and wide. Distinctive, deeply-lobed, somewhat coarse, deep green, oak-like leaves. Mature stems exfoliate to reveal a rich brown inner bark which is attractive in winter.