Corylopsis pauciflora, the buttercup winter hazel, is one of the most charming plants in the witch hazel family.  It features unique and colorful leaves, attractive and lightly fragrant flowers, fall color and is a good size for smaller gardens.  It is the smallest and most compact growing member of the genus.  The genus name means resembling (“opsis”) the leaf of a Corylus, or common hazel (though they are not related).   

1)   Acer triflorum                Three Flower Maple

A small, slow-growing deciduous 20’ to 45’ tree, where it is native to Manchuria and Korea. An excellent landscape tree boasting light-grey vertically furrowed bark and vivid red and orange fall color. The specific epithet makes reference to its flowers, which are borne in clusters of three.
This tree was discovered by noted plant explorer, Ernest H. 

1)   Cornus mas                     Cornelian Cherry

A native of Europe, C. mas has been cultivated for centuries in Britain. Flowers are produced in February and March on the leafless stems in short-stalked umbels from the joints of the previous year’s wood.
Oblong-ellipsoid, fleshy, bright red fruit are produced in late summer, and are edible when ripe.
Found throughout the Arboretum, these shrubs or small trees are easily identified at this time. 

The calendar says it’s spring, but what does Nature say? Discover the answer with a stroll through the Washington Park Arboretum.

The Camellias are coming on strong at the Washington Park Arboretum.

1)  Corylopsis glabrescens                                    Winter Hazel

This native of Korea and Japan teases us with flower buds that seem to be just on the edge of opening – for weeks!
The Joseph Witt Winter Garden contains multiple species of Corylopsis so that people may compare and appreciate the subtle differences in form and flower color the genus Corylopsis offers.

2)  Pieris japonica                                                          Lily of the Valley Shrub

The spring flowers and often the new growth of Pieris can be quite showy, but the buds themselves decorate our gardens throughout the winter months. 

The Witt Winter Garden was originally designed and planted in 1949. In the late 1980s the garden was named after Joseph A. Witt, an Arboretum curator who had a special interest in winter ornamental plants. Here is a small sampling of plants to be enjoyed now in the Winter Garden.
Download a map and plant list at:
https://botanicgardens.uw.edu/washington-park-arboretum/gardens/joseph-a-witt-winter-garden/
1)   Chimonanthus praecox                (Wintersweet)

The 15’ tall arching stems host beautiful and aromatic creamy, yellowish flowers. 

Hamamelis x intermedia ‘Jelena’ has long been one of the most popular of the hybrid witch hazels.  Flowers appear as a bright copper-orange from a distance.  Closer inspection reveals a bicolored flower, being reddish at the base but changing to more of an orange yellow at the tip.  Although it has relatively little scent compared to the intoxicatingly fragrant Hamamelis mollis, it is prized for its flower color.   

New Zealand has a large number of shrubs with small tough leaves and wiry interlacing branches – divaricates. Some even have brown or grey new growth, giving a dead-like appearance. It is suggested that this may be a defensive mechanism to deter browsing moa (extinct flightless birds).
1)  Coprosma propinqua                (Mingimingi)

A visiting New Zealand scholar once described Coprosma as “a genus without morals that hybridizes incessantly” as she was politely telling us she didn’t think we were actually growing true Coprosma propinqua. 

If you’ve recently visited the Washington Park Arboretum, you may have noticed the new Arboretum Loop Trail is taking shape. Crews have continued to make progress through a very wet fall and cold winter, and they hope to open the first section in mid-February.
Part of the Arboretum’s long-term Master Plan, the project creates 1.2 miles of new trail, completing a 2.5 mile loop.