Fine (Evergreen) Foliage of Fall

Selected cuttings from the Washington Park Arboretum (October 31, 2016 - November 13, 2016)

1)   Arbutus unedo                    Strawberry Tree Autumn brings bright white bell flowers and deep red-orange fruit, both of which are set off by the deep-green, leathery leaves. Hidden under the foliage are attractive stems with shredding red-brown bark. 2)   Berberis (Mahonia) fortunei              Chinese Mahonia Many evergreen Mahonias have excellent textural foliage, from large and bold to low and delicate. Berberis fortunei can be found growing low to the ground on our Sino-Himalayan hillside. 

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Selected Mid-Autumn Cuttings from the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, October 17 - 30, 2016

1)   Araucaria araucana                Monkey Puzzle Native to Chile and Argentina in the south central Andes mountains. This long-lived tree is frequently described as a living fossil. Large cones yield many edible nuts, similar to a pine nut. 2)   Berberis gagnepainii                                 Gagnepain’s Barberry This evergreen shrub is native to China in the Sichuan and Yunnan Provinces. Shrub is protected by many slender three-spined thorns. 

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Autumn Color Arrives at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum (October 3 - 16, 2016)

1)  Sorbus alnifolia                                               (Korean Mountain Ash) Native to central China, Korea and Japan this medium-sized tree boasts showy 2-3 inch umbrella-shaped clusters of 5-petal white flowers in late spring. As summer yields to autumn, clusters of purple-red to orange-red ½ inch showy fruits appear and persist into winter. 2)  Gaultheria mucronata                                      (Prickly Heath) Formerly known as Pernettya, this southern Chilean native spends the fall awash with showy globose berries in shades from deep plum to pink to white. 

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August Color Appears at the Washington Park Arboretum

1)  Clerodendrum bungei C. bungei is a deciduous, suckering shrub producing upright shoots and opposite, ovate, toothed, dark green leaves tinged with purple when young.  Salverform, fragrant, dark pink flowers, each with five spreading lobes, are borne in rounded, terminal panicles from late summer to autumn.  Native to China and a member of the family Lamiaceae, this specimen is happily spreading around the south side of bed ‘G’ on Azalea Way. 

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“One is the loneliest number…”

The University of Washington Botanic Gardens is home to truly one of a kind plants.  In botanical nomenclature, a monotypic genus refers to the case where a genus and only a single species are described.  These plants are often “living fossils”, comprising the last living remnant of ancient lineages.  Many are also often in the IUCN Red List of Threatened Species. 

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July Color Appears at the Washington Park Arboretum

1)  Colutea orientalis                Bladder Senna This deciduous native of northern Iran has delicate bluish-green pinnate leaves. The orange flowers are followed by surprising translucent bladder-like fruit pods. You can find Colutea orientalis in the Legume Collection along Arboretum Drive. 2)  Hydrangea macrophylla  ‘Mme. Emile Mouillere’ Bigleaf Hydrangea Hydrangea macrophylla is native to Japan. This cultivar is an example of the Hortensia group – having mophead flowers. 

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Summer Arrives at the Washington Park Arboretum

1)  Cunninghamia lanceolata                (Chinese Fir) Bluish evergreen foliage contrasts nicely with its scaly bark. This evergreen tree from China is an important timber tree in its native area. In 1701, James Cunningham (one of the first European plant hunters to visit China) described and collected this tree. 2)  Hydrangea integrifolia                                                      (Evergreen Climbing Hydrangea) A vigorous, evergreen vine climbing to over 40 feet, on the trunk of a mature Douglas Fir. 

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The Wonderful World of Monocots

Monocotyledons, commonly referred to as monocots, are flowering plants whose seeds typically contain only one embryonic leaf, or cotyledon.  A quarter of the world’s known plants are monocots. They are the most economically important group of plants to humans today in agriculture, horticulture, forestry and fiber industries.  Here are a few samples of monocots in our plant collections. 1)  Allium schubertii                                                                            (Ornamental Tumbleweed Onion) Dried seed heads look like starry tumbleweeds or shooting star fireworks Located in the Soest Herbaceous Display Garden, bed 6 at the Center for Urban Horticulture 2)  Austroderia richardii syn Cortedaria r.                      

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Spring Pushes Forth at the Washington Park Arboretum

1)   Ostrya carpinifolia                Hop Hornbeam This small-to-medium-sized tree (40-50’) is native to southern Europe and southwestern Asia. The common name refers to the fruit which resembles the fruit of Humulus (Hops). Ostrya is from Greek, meaning “bone-like” in reference to the trees dense hard wood. Located north of East Foster Island Road, east of the Broadmoor entrance. 2)  Picea mariana ‘Doumetii’                Doumet Black Spruce This selection of Picea mariana is a popular slow-growing shrub with blue green needles and a dense conical growth habit. 

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