ornamental trees. Purple Beech (Fagus sylvatica Purpurea). large deciduous tree, spreading branches dark purple foliage all season long turn copper in autum, shimmering bronze in spring. widely planted in large parks With its smooth grey bark and delicate tracery of branches. zone: 5a Max. height 60’, growth:slow, Spring/summer foliage:purple leaves,Sun. --- quite particular about growing conditions, requires rich soil and significant moisture.---> Nix.