Mountain Witch Alder, Large Fothergilla, Tall Fothergilla. A bushy low Spreading deciduous shrub too 1-3 metres. Fothergilla is in the witchhazel family Hamamelidaceae , with downy twigs. Larger leaves and more layered growth than F.gardenii. Brilliant red-orange Autumn colours. White perfumed toothbrush like flowers in Spring. Best in morning sun or woodland conditions. Fothergilla major is native to woodland and swamps of the southeastern United States.