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Chinese Broadleaf

Helwinga japonica
The lone species in the Helwinga family, it is native to Japan, central & western China, Bhutan, Burma and Taiwan.
It is a handsome, vigorous large arching shrub, it can reach a maximum size of 15 x 17 feet though usually less than half that.
It is an attractive, leafy attractive foliage plant with leaves up to 7 x 4.5 inches in size that are deep green turning to purple-gray in autumn. The bristly tooth margined foliage is similar to that of Aucuba but is deciduous.
The leaves on vigorous stems are elliptic and leaves on older branches are more ovate. They are borne on leafstalks up to 2 inches in length.
The greenish-white flowers borne from the leaves in late spring are small and not of ornamental value. They are followed by small ovoid black berries late summer into fall.
The stems are yellowish-green.
Hardy zone 6 to 8 ( based on seed source from coldest parts of natural range ).
It prefers moist shady conditions and is excellent for planting in a woodland understory.
Propagation is from seed sown after 4 to 5 month cold stratification; also from severing the lateral root suckers that naturally enable this shrub to eventually form a thicket.


* photo taken on May 8 2010 @ U.S. National Arboretum, D.C.