Announcing the 2018 Park Tree Inventory Locations! When rains do return in autumn, deciduous trees are starting to shut down. All content is made possible by the generous gifts of our supporters. Urban Forestry has added a second American magnolia to the list of evergreen choices, the northern sweetbay Magnolia virginiana ‘Jim Wilson.’ Trademarked as Moonglow, this cultivar was … The trees and large shrubs described below have all weathered enough winters in Washington and Oregon west of the Cascades to have proven their hardiness here. Second, they are as easy to grow, and about as fast, as other groups of plants, though they vary widely in their particulars. Ilex glabra 'Shamrock' SHAMROCK INKBERRY. Plants from A through L are included here; the remainder will appear in the next issue. 1 - A sweet new magnolia. Although there is no fall color change, new leaves emerge an attractive silvery purplish red during the growing season. Some trees mentioned in our article are grown by wholesale nurseries and shipped to retailers. It makes a rather large shade tree 60 to 90 feet tall. Those forests are home to an endangered primate, the Barbary macaque. The obvious solution to our winter-rainfall woes is to plant more evergreen trees. The loquat (Eriobotrya japonica) appears now and then in Northwest gardens and may even yield its luscious fruit to those who give it a warm, sunny spot. Why we love it: Boxwoods are probably the best evergreens for shaping and pruning, which is why they are often the gardener’s choice for creating formal hedges, borders, and even topiaries. Some are extremely hardy and Thuja Emerald Green is renowned for growing right up into zone 2 in Canada, so no matter how cold your area is, this is an evergreen that will thrive for you. Although eclipsed later when the colored flowers of Asian species arrived, Southern magnolia remains a popular park, garden and street tree the world over. The pioneers who founded Portland quite naturally planted their new parks and streets with deciduous trees familiar to them from their home states. One key drawback to the tree is that suckers sprout regularly from the lower trunk and require removal to avoid creating a multi-stemmed monster. It may be rather shrubby unless top grafted. Edith Bogue grows at a moderate pace 30’ to possibly 40’ tall and 15’ to 20’ wide. These sit deeply in their cup, taking up to two years to ripen. Just when we need them most, deciduous trees lose the very leaves we require to help intercept moisture and slow flooding. – Discounted rates on travel programs A deep tap root means this tree will endure the driest summers unruffled while maples and other eastern trees wilt and defoliate early. It is hardy in all but the coldest zones west of the Cascades. Knoxville, TN 37938 Portland, OR 97204. The recent string of record freezes has left doubts and confusion. In particular, the number of broadleaved evergreens has increased to an even dozen. As importantly, rain all but ceases here from July to September. There is an evergreen tree for every growing zone, and 8 is no exception. The leaf spicing up your next pasta probably came from the true bay laurel Laurus nobilis. And where there is harshness to soften or ugliness to hide, we need the camouflage of foliage year round. East Portland’s Douglas Firs Defined the David Douglas District, Ventura Park Has Long Been a Quiet Stopping Place Off Stark Street. Given Portland’s mild climate, our urban forest could look a lot greener even in winter than those dreary northern cityscapes. It can reach 60 to 80 feet in height with a spread up to 60 feet or more. Trees from sturdy, preferably local, stock are hardy in most places, and the plant makes a bushy specimen fifteen to thirty feet tall. Birds find these seeds attractive. Its broad, bushy form and thick, oval leaves are amazingly like those of the Indian laurel fig (Ficus microcarpa, sometimes erroneously called F. retusa). The official state flower of Mississippi, this evergreen tree with its large, white flowers (up to 8” across) scented of lemons started a craze for North American garden trees in Britain in the mid-1700s, and was a prize tree in the garden of the Duchess of Beaufort as early as 1730. Many members of the oak family are actually evergreen. Zone 8 evergreen varieties are plentiful and provide screening, shade, and a pretty backdrop for any temperate garden. Older trees seem to produce leaves that are less armed than those of young trees. The former has bigger leaves, up to ten inches long and four inches wide, but the latter offers showier red berries. There are needled evergreens and broadleaf evergreens, as well as trees that produce spring-time flowers or stunning fall color. The southern magnolia grows well in zone 7. Sounds nice, right? Specimens planted within the past 20 years are already a respectable size and have proven tough as nails, sailing untroubled through ice storms and snowfalls. debeuzevillei, and the small-leaved E. archeri.All three survived the cold (down to 0° F. in some places) while other species perished, and all are strikingly handsome. 1420 Beaumont Street Photographs by Pamela Harper except where noted. Though it may be a giant, slow-growing shrub in open exposures, in woodland tanoak assumes a tall, open form that, with its whitish bark, resembles an evergreen alder. It was selected for being more evergreen than other sweetbays from the northern part of this tree’s range and for its upright growth to 35 feet. (615) 693-7533, Camellia Forest Nursery Bay laurel is capable of reaching 30 feet or more with a spread of 20 feet. Biggest of the three is I. chinensis, whose large, thin, lime green leaves make a light, irregularly pyramidal crown to sixty feet. Beaver Creek Nursery Broadleaf Evergreens for Zone 7. Growing natively in the South at elevations below 500 feet, not all cultivars are hardy enough to survive Portland’s cold winters or snow and ice storms.
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