Late Summer Colors Appear at the Washington Park Arboretum

Close-up photo of Castenea crenata fruit

1)  Castanea crenata                     Japanese Chestnut Though it is one of the smaller species of chestnut, C. crenata is still a valued food tree in its native Japan. Ordinarily the nuts are also smaller than those of the European varieties. This specimen is located on the east side of our field nursery along the gravel path. 2)  Cephalotaxus harringtonia var. ‘Nana’           Dwarf Plum Yew Native to the forest understories of eastern Asia, this small, evergreen shrub is known to thrive in semi-shaded places rather than in full sunshine. 

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Early Summer Interests at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, (July 16 - 29, 2018)

1)  Corylus colurna                     Turkish Hazelnut or Filbert The Turkish Hazelnut is native to southeastern Europe into western Asia. In summer, edible nuts are produced inside dramatically styled husks. The Turkish Filbert can be found along Foster Island Road, opposite the Broadmoor gatehouse. 2)  Hydrangea macrophylla ‘Sumida-no-hanabi’                     Bigleaf Hydrangea ‘Sumida-no-hanabi’ translates to “fireworks over the Hanabi River”. This wonderful hydrangea can be found in the Centennial Garden along Azalea Way. 

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Summer Flower Subtlety at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, June 18, 2018 - July 1, 2018

1)  Illicium henryi                    Henry Anise Tree This attractive evergreen shrub is native to China. It has star-shaped flowers in pink to deep crimson, anise-scented leaves when bruised and is tolerant of shade. This specimen is located adjacent to the Lookout Loop Trail in the Asiatic Maple collection. Grid 25-1E, if using our mobile interactive plant map. 2)  Leptospermum scoparium                    Manuka A broad-leafed evergreen shrub native to New South Wales, Victoria, Tasmania, New Zealand. 

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Selected Cuttings from the Washington Park Arboretum for June 2018

Selected cuttings from the Washington Park Arboretum, June 4 - 17, 2018

1)  Kalmia latifolia                     Mountain Laurel This attractive evergreen shrub is native to the eastern United States. Has five-sided cup-shaped clusters of pink flowers. The name honors Pehr Kalm (1715-1779) and latifoliia means “Broad Leafed”. 2)  Rhododendron occidentale                     Western Azalea This deciduous shrub is native to the coasts of central and southern Oregon and California. Fragrant, funnel-shaped flowers are borne in trusses and vary from white to pale rose, with or without a yellow blotch and sometimes streaked with darker rose markings. 

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Selected Cuttings from the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, May 21, 2018 - June 3, 2018

1)  Enkianthus campanulatus                    Redvein Enkianthus This attractive deciduous shrub is native to open woodlands in Japan. Tiny bell-shaped, creamy-yellow to reddish flowers held together in clusters. Small elliptic leaves turning bright red, orange and yellow in the fall. 2)  Davidia involucrata                     Handkerchief Tree This deciduous tree is native to woodlands in central China. Its small, reddish purple flower heads are surrounded by a pair of large, white bracts up to 30 cm. 

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Selected cuttings make their appearance in late March at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, March 19, 2018 - April 1, 2018

1)  Berberis darwinii                     Darwin’s Barberry This barberry was discovered in Chile by Charles Darwin in 1835 during his voyage on the Beagle. Located in the Chilean entry garden of the Pacific Connections Garden, the red-tinted flower buds open to bright yellow-orange flowers. The abundant summer fruit of this barberry is sweet and delicious as opposed to our native sour barberries (mahonias). 

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First to Flower in March

Selected cuttings from the Washington Park Arboretum, Marcy 5 - 18, 2018

1)  Forsythia ovata     Korean Forsythia This genus is named in honor of Scottish botanist William Forsyth. Forsyth was a founding member of the Royal Horticulture Society in England. A short and spreading deciduous shrub that is popular in gardens and yards for its early spring display of bright yellow flowers. These are planted throughout the park, but can be enjoyed walking down Azalea Way. 

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Requiem for Two Oaks and a Southern Beech

Selected cuttings from three significant tree collections in the Washington Park Arboretum, February 19, 2018 - March 5, 2018

“So if you’re travelin’ in the north country fair Where the winds hit heavy on the borderline Remember me to one who lives there She once was a true love of mine.” – Bob Dylan Three significant tree collections succumbed to frigid north winds this past weekend.  These cuttings pay homage to their past lives. 1)   Nothofagus pumilio                Lenga Beech in Mapuche language      (Grid 49-2E) This Chilean deciduous tree from the Andes (accession 637-70*A) was received as a whole plant from Edinburgh Royal Botanic Garden in 1970. 

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Colorful Willows and Dogwoods for Winter

Selected cuttings from the Washington Park Arboretum, February 5 - 18, 2018

1)  Salix  ‘Swizzlestick’                   Corkscrew Willow Thrives in wet locations and is salt tolerant. Orange-yellow young twigs that have a corkscrew growth pattern Cut back hard in spring to promote attractive new branches. 2)  Cornus sericea  ‘Flaviramea’ Yellow Twig Dogwood Medium to large, deciduous shrub Bright yellow-green young twigs easily grown in medium-to-wet soils in full sun or part shade. Species native to North America (excluding lower mid-west and deep south) 3)  Salix alba  ‘Britzensis’             Coral Bark Willow Fast growing to 80 feet tall, but may be coppiced each spring. 

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Color in Winter at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, January 22 - February 1, 2018

1)   Sarcococca hookeriana var. digyna                     Sweet Box Evergreen, rhizomatous, suckering shrub Purplish stems with narrowly lanceolate, mid-green leaves and clusters of small, creamy-white, fragrant flowers Native to western China 2)   Hamamelis mollis                      Chinese Witch Hazel Medium-to-large, deciduous shrub Fragrant yellow flowers often with a red base, with four ribbon-shaped petals that grow in clusters Native to central and eastern China 3)   Daphne bholua  ‘Jacqueline Postill’                     Bhulu Swa, Nepalese Paper plant Evergreen shrub Leathery leaves and deep pink flowers with a powerful fragrance Native to the Himalayas and neighboring mountain ranges from Nepal to southern China 4)   Garrya elliptica  ‘James Roof’                    Silk Tassel Evergreen shrub to small tree Yellowish-colored, male catkins that dangle 12″ or more from the ends of the branches in winter to early spring and turn gray as they age. 

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