University of Washington Botanic Gardens

1)  Cupressus arizonica var. montana   (San Pedro Martir Cypress) 

Selected Cuttings from the Washington Park Arboretum (November 14 - 28, 2011)

• This botanical variety of Arizona cypress grows at a high elevation in northern Baja California in
  the San Pedro Martir mountain range.
• Has attractive bark and cones that open when ripe.
• Listed as “vulnerable” in the IUCN red list.
• Located in 2-6E, south end of Arboretum Drive along Broadmoor fence.

2)  Diospyros sp.  (Persimmon)

• This small deciduous tree is laden w/ tiny edible berries.
• Berries typically need frost to ripen and are astringent if unripe.
• There are several Asian varieties that are sold in our local markets this time of year.
• Located in 12-2W, north of Boyer parking lot.

3)  Magnolia virginiana   (Sweet Bay)

• Coastal southeastern US semi-evergreen magnolia.
• Small, scented white flowers in spring, hence its common name.
• This specimen shows fruiting cones that have begun to split open exposing shiny red seeds.
• Located in 27-2W, west of Azalea Way and north of Loderi Valley intersection.

4)  Osmanthus fragrans    (Fragrant Tea Olive)

• Large evergreen shrub native to China.
• Fragrant, small white flowers in fall are used to infuse green or black tea leaves, to create
  a scented tea called guì huā chá (桂花茶).
• This specimen is located in the China entry garden of Pacific Connections Gardens, below
  interpretive shelter.

5)  Platycarya strobilacea

• This walnut family member is a small deciduous tree native to Asia.
• Female infloresence resemble a cone, as seen on this specimen.
• Located in 30-4W, east toe of Yew Hill.

1) Callicarpa japonica   (Japanese beautyberry)

Selected cuttings from the Washington Park Arboretum (October 31 - November 14, 2011)

• Native to Japan, the small metallic purple berries of this multi-stemmed, deciduous shrub are
  best viewed when the leaves have dropped beginning mid-to-late fall.
• The berries are an important survival food for birds and other animals.
• Beautyberry is just beginning to reflect its true glory in the Winter Garden.

2) Daphniphyllum macropodum

• It is one of the most handsome evergreens for foliage effects.
• Heat tolerant and remarkably cold-hardy, it is a distinguished addition to the Woodland Garden.
• It prospers in shade in moist, well-drained soil and can grow 10′-12′ with equal spread.

3) Grevillea victoriae    (Royal grevillea)

• The specific epithet victoriae was named for Queen Victoria.
• Here in the Pacific Northwest, the flowers provide winter hummingbird food.
• There are two Grevillea victoriae thriving in “Australia” in the Pacific Connections Garden.

4) Pyracantha rogersiana ‘Aurantiaca’    (Asian firethorn)

• A spreading shrub with arching branches and small bright evergreen leaves.
• White flowers in spring are followed by orange-red berries in fall.
• Seeds may cause mild stomach upset if ingested.

5) Symphoricarpos albus    (White snowberry)

• Snowberry is a lovely, deciduous sub shrub native to the Pacific Northwest.
• Small, pink bell-like flowers appear in mid-spring and are much loved by hummingbirds.
• The white berries have the size and consistency of mini marshmallows which are winter food for varied thrush.

Species of Sorbus are commonly known as whitebeam, rowan, service tree, and mountain ash. All these cuttings are from the Brian Mulligan Sorbus Collection, located to the east of Arboretum Drive across from the Magnolia Collection.

Selected cuttings from the Washington Park Arboretum (September 19 – October 3, 2011)

1) Sorbus aucuparia (European Rowan)

• Sorbus aucuparia is native to most of Europe except for the far south, and northern Asia.
• It is listed as a ‘Weed of Concern’ by the King County Noxious Weed Board because of its propensity to spread seeds far and wide via birds.
• This specimen was collected from the last remaining Sorbus aucuparia, which fell over during the past weekend.

2) Sorbus commixta (Japanese Rowan)

• Sorbus commixta is a species of rowan native to Japan, the far east of Russia on Sakhalin, and in Korea on the island of Ulleungdo.
• Performs very well in the Pacific Northwest, producing large crops of berries.
• While unappetizing to humans, birds (especially robins) can denude a tree of berries in a day.

3) Sorbus prattii

• Sorbus prattii is a Chinese rowan bearing small corymbs of white flowers in late spring followed by green berries that ripen to white.

4) Sorbus tamamschjanae

• A little known red-berried, simple-leafed Rowan from Armenia.

5) Sorbus vestita (Himalayan Whitebeam)

• Broad and conical tree with sharply toothed leaves, that has corymbs of white flowers that bloom in late spring followed by yellowish-green berries with brown freckles.

1. Catalpa X erubescens (Hybrid Catalpa)
2. Hibiscus ‘Lohengrin’
3. Kalopanax pictus (Prickly castor-oil tree)
4. Quercus hypoleucoides (Silverleaf oak)
5. Sequoia sempervirens ‘Henderson Blue’

Complete details.

1. Hydrangea involucrata ‘Tama Azisai’
2. Lonicera xylosteum (Fly honeysuckle)
3. Magnolia virginiana var. australis
4. Rhododendron degronianum ssp. yakushimanum
5. Sorbus scopulina var. cascadensis

Complete details.

1. Acer macrophyllum ‘Kimballiae’ (cut leaf Oregon maple)
2. Lithocarpus densiflorus (tanbark oak)
3. Neolitsea sericea
4. Styrax obassia (bigleaf snowbell tree)
5. Trochodendron aralioides (wheel tree)

Complete details.

1. Aesculus pavia (Red Buckeye)
2. Lonicera ciliosa
3. Lonicera maackii var. erubescens
4. Lithocarpus densiflorus var. echinoides (Dwarf Tan Oak)
5. Laburnum x watereri ‘Vossii’ (Hybrid Goldenchain Tree)

Complete details.

1. Rhododendron ‘Firefly’     Grid 16-B
2. Rhododendron japonicum Grid 40-1E
3. Rhododendron ‘Knap Hill Apricot’     Grid 39-B
4. Rhododendron occidentale (Pink Form)     Grid 37-1W
5. Rhododendron ‘Sandpiper’     Grid 37-B

Complete details.