 Many plant species normally found only in ancient woodlands occur, including broad-leaved helleborine ("Epipactis helleborine") and wood small-reed ("Calamagrostis epigejos").One of the largest plantations of coast redwoods ("sequoia sempervirens") in Britain is also located here, mostly within the grounds of Center Parcs Longleat.These grounds are also home to the U.K.'s tallest giant redwood ("sequoiadendron giganteum").