Puzzle Bush. A deciduous small tree or shrub, usually multistemmed, with an rounded crown. It has tangled branches which arch downwards or droop - this gives it its common name. The flowers grow in dense clusters on the branches. They are pale mauve, blue or white, with male and female flowers on different plants. They are sweetly scented. Fruits are edible. The Puzzle Bush is becoming very popular as a garden plant because it is hardy and drought resistant, very attractive to birds and insects and is therefore a wonderful addition to the wildlife garden.