{"id":66,"date":"2015-05-04T22:31:28","date_gmt":"2015-05-04T22:31:28","guid":{"rendered":"http:\/\/agsci.colostate.edu\/landscapeplants\/?page_id=66"},"modified":"2015-05-04T22:31:28","modified_gmt":"2015-05-04T22:31:28","slug":"superior_woody_plants","status":"publish","type":"page","link":"https:\/\/agsci.colostate.edu\/landscapeplants\/superior_woody_plants\/","title":{"rendered":"Superior Woody Plants"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text]Currently there are about 1100 different taxa of woody plants being evaluated in the arboretum area at the W. D. Holley Plant Environmental Research Center (PERC) on the Colorado State University campus. The woody plants are evaluated yearly for growth rate, hardiness, growth habit, foliage characteristics, flower &amp; fruit characteristics, disease and insect resistance and other landscape features. Listed below are some plants that merit more attention for use in the Rocky Mountain\/High Plains Area. You are welcome to visit PERC located in the south-west corner of Colorado State University in Fort Collins any day of the year during daylight hours.<\/p>\n<p align=\"left\"><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Buxus%20microphylla%20koreana%20%27julia%20jane%27.jpg\" alt=\"\" width=\"448\" height=\"297\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/297;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Buxus_microphylla_koreana_%27julia_jane%272.jpg\" alt=\"\" width=\"448\" height=\"298\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/298;\" \/><\/p>\n<p><strong>Buxus microphylla koreana &#8216;Julia Jane&#8217;<br \/>\n(Julia Jane Boxwood)<\/strong><br \/>\nGrowth Habit &#8211; dense, rounded<br \/>\nHeight: 3-4&#8242;<br \/>\nSpread: 3-4&#8242;<br \/>\nFlowers &#8211; April, not showy but fragrant, attracts bees<br \/>\nFoliage &#8211; Broadleaf, evergreen<br \/>\nHardiness Zone &#8211; 5<br \/>\nCultural Requirements &#8211; Requires full or partial sun, moderate moisture, well-drained soils, mulch and winter watering is helpful.<br \/>\nComments &#8211; Boxwoods generally are best in protected spots out of winter winds but &#8216;Julia Jane&#8217; is less prone to &#8220;winterburn&#8221; and keeps a good dark green color through the winter.<\/p>\n<p align=\"left\"><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Rosa%20x%20%27Meizmea%27.jpg\" alt=\"\" width=\"450\" height=\"348\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 450px; --smush-placeholder-aspect-ratio: 450\/348;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Rosa_x_%27Meizmea%272.jpg\" alt=\"\" width=\"448\" height=\"298\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/298;\" \/><\/p>\n<p><strong>Rosa x &#8216;Meizmea&#8217;<br \/>\n(Carefree Spirit Rose)<\/strong><br \/>\nGrowth Habit &#8211; Mounding bush<br \/>\nHeight: 3-5 ft.<br \/>\nSpread: 3-5 ft.<br \/>\nFlowers &#8211; Deep cherry red blossoms maturing to pink with white eyes, flowering is continous<br \/>\nFoliage &#8211; Very attractive dark green and glossy, vigorous<br \/>\nHardiness Zone &#8211; 5<br \/>\nCultural Requirements &#8211; Sun, moderate water<br \/>\nComments &#8211; Selected in 2009 as an AARS winner. Noted as the first and only landscape shrub to date to prevail despite not using fungicides. Hybridized by Jacques Mouchotte, director of research at Meilland International and introduced by Conard-Pyle Co. of West Grove, Penn<\/p>\n<p align=\"left\"><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Sambucus_pubins2.jpg\" alt=\"\" width=\"336\" height=\"435\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 336px; --smush-placeholder-aspect-ratio: 336\/435;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Sambucus%20pubins.jpg\" alt=\"\" width=\"448\" height=\"336\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/336;\" \/><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Sambucus_pubins3.jpg\" alt=\"\" width=\"448\" height=\"333\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/333;\" \/><\/p>\n<p align=\"left\"><strong>Sambucus pubins<br \/>\n(Red Elderberry)<\/strong><br \/>\nGrowth Habit &#8211; Upright, irregular<br \/>\nHeight: 9-12 ft.<br \/>\nSpread: 8-15 ft.<br \/>\nFoliage &#8211; Dark green<br \/>\nFlowers &#8211; White\/yellow<br \/>\nHardiness Zone &#8211; 3<br \/>\nCultural Requirements &#8211; Does best in moist soils although will tolerate dry soils, adaptable to acid or alkaline conditions, does sucker some<br \/>\nComments &#8211; Flowers are interesting close up and produce attractive scarlet fruit in late June to early July. Fruit is showy and good for attracting wildlife. Attractive as a background shrub. The cultivar &#8216;Dissecta&#8217; has deeply divided leaflets that adds a more delicate appearance. Obtained from American Horticultural Society in 1987.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Tilia%20cordata%20%27Corzam%27.jpg\" alt=\"\" width=\"297\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 297px; --smush-placeholder-aspect-ratio: 297\/448;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Tilia_cordata_%27Corzam%272.jpg\" alt=\"\" width=\"448\" height=\"326\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/326;\" \/><\/p>\n<p><strong>Tilia cordata &#8216;Corzam&#8217;<br \/>\n(Corinthian\u00ae Linden)<\/strong><br \/>\nGrowth Habit &#8211; Pyramidal<br \/>\nHeight: 10-15 ft.<br \/>\nSpread: 8-12 ft.<br \/>\nFlowers &#8211; Yellowish and provides interest but not very showy, fragrant<br \/>\nFoliage &#8211; Medium to dark green<br \/>\nFall Foliage &#8211; yellow<br \/>\nHardiness Zone &#8211; 3<br \/>\nCultural Requirements &#8211; prefers full sun and moist soil, pH adaptable, pollution tolerant<br \/>\nComments &#8211; Uniform pyramidal habit, this compact selection is well suited for use as a street tree. The lateral branches are arranged uniformly around a strong central leader, and the plant may reach 45&#8242; tall with a spread of 15&#8242;. Obtained in 1994 from J. Frank Schmidt and Son Co.<\/p>\n<p align=\"left\"><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Malus%20x%20%27Silver%20Drift%27%20small.jpg\" alt=\"\" width=\"448\" height=\"315\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/315;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Malus_x_%27Silver_Drift%27_small_2.jpg\" alt=\"\" width=\"448\" height=\"336\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/336;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Malus_x_%27Silver_Drift%27_small_3.jpg\" alt=\"\" width=\"448\" height=\"298\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/298;\" \/><\/p>\n<p align=\"left\"><strong>Malus x &#8216;Silver Drift&#8217;<br \/>\n(Silver Drift Crabapple)<\/strong><br \/>\nGrowth Habit &#8211; Rounded<br \/>\nHeight: 10-15 ft.<br \/>\nSpread: 10-15 ft.<br \/>\nFoliage &#8211; Medium green<br \/>\nFlower &#8211; Red buds open to white flowers<br \/>\nFruit &#8211; Small cherry red fruit in September maturing to dark red by November, showy<br \/>\nHardiness Zone &#8211; 4<br \/>\nCultural Requirements: Full sun and moist soil<br \/>\nComments &#8211; A fast growing tree with showy fruit that is very persistent for a long season of interest. Excellent resistance to apple scab, rust and fire blight. Obtained in 2002 from Bailey Nurseries.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Acer_Sugar_Cone.jpg\" alt=\"\" width=\"275\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 275px; --smush-placeholder-aspect-ratio: 275\/448;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Acer_Sugar_Cone2.jpg\" alt=\"\" width=\"336\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 336px; --smush-placeholder-aspect-ratio: 336\/448;\" \/><\/p>\n<p><strong><em>Acer saccharum<\/em> \u2018Sugar Cone\u2019<br \/>\nSugar Cone Sugar Maple<\/strong><br \/>\nGrowth Habit \u2013 Conical shape<br \/>\nHeight: 25\u2019<br \/>\nSpread: 10-12\u2019<br \/>\nFoliage \u2013 Medium green<br \/>\nFall Foliage \u2013 Yellow, orange<br \/>\nHardiness Zone \u2013 3<br \/>\nCultural Requirements \u2013 Adaptable to alkaline conditions. Prefers moderately moist, fertile soils. Tolerates some shade.<br \/>\nComments Obtained in 2004 from Schichtel\u2019s Nursery which is one of their own introductions. It is a dwarf and compact tree which is very dense in leaf and outstanding twiggy winter form. This clone is slow growing.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Aesculus_Homestead.jpg\" alt=\"\" width=\"298\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 298px; --smush-placeholder-aspect-ratio: 298\/448;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Aesculus_Homestead2.jpg\" alt=\"\" width=\"298\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 298px; --smush-placeholder-aspect-ratio: 298\/448;\" \/><\/p>\n<p><strong>Aesculus x &#8216;Homestead&#8217;<br \/>\nHomestead Buckeye<\/strong><br \/>\nGrowth Habit &#8211; Rounded to broad<br \/>\nHeight: 35&#8242;<br \/>\nSpread: 25&#8242;<br \/>\nFoliage &#8211; Medium green<br \/>\nFall Foliage &#8211; Yellow, orange, red<br \/>\nFlower &#8211; Yellowish-red, sterile<br \/>\nHardiness Zone &#8211; 4<br \/>\nCultural Requirements &#8211; Prefers a more moist, well drained soil and performs poorly in a dry site. Grows in sun or partial shade.<br \/>\nComments &#8211; Obtained in 2006 from Carlton Nursery. This is a hybrid of A. flava x A. glabra bred at South Dakota State University.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Prunus_Pink_Flair.jpg\" alt=\"\" width=\"298\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 298px; --smush-placeholder-aspect-ratio: 298\/448;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Prunus_Pink_Flair2.jpg\" alt=\"\" width=\"298\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 298px; --smush-placeholder-aspect-ratio: 298\/448;\" \/><\/p>\n<p><strong>Prunus sargentii &#8216;JFS-KW58&#8217;<br \/>\nPink Flair\u00ae Cherry<\/strong><br \/>\nGrowth Habit &#8211; Upright, narrow vase shape<br \/>\nHeight: 25&#8242;<br \/>\nSpread: 15&#8242;<br \/>\nFoliage &#8211; Dark green<br \/>\nFall Foliage &#8211; Red, orange<br \/>\nFlowers &#8211; Single pink flowers in clusters<br \/>\nHardiness Zone &#8211; 4<br \/>\nCultural Requirements &#8211; Prefers full sun and moderately moist soils.<br \/>\nComments &#8211; Obtained in 2001 from J. Frank Schmidt and Son Nursery. Blooms appear several weeks later than most cherries often avoiding frost damage. Bark has a rich, chestnut color with a polished appearance. The upright narrow vase shape gives good winter appeal and the compact habit makes it a good choice for urban landscapes.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Pyrus_Jackzam.jpg\" alt=\"\" width=\"298\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 298px; --smush-placeholder-aspect-ratio: 298\/448;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Pyrus_Jackzam2.jpg\" alt=\"\" width=\"448\" height=\"298\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/298;\" \/><\/p>\n<p><strong>Pyrus calleryana &#8216;Jackzam&#8217;<br \/>\nJack\u00ae Dwarf Flowering Pear<\/strong><br \/>\nGrowth Habit &#8211; Upright, oval<br \/>\nHeight: 16&#8242;<br \/>\nSpread: 10&#8242;<br \/>\nFlowers &#8211; White<br \/>\nFoliage &#8211; Dark green, glossy<br \/>\nFall Foliage &#8211; Orange\/red<br \/>\nHardiness Zone &#8211; 4<br \/>\nCultural Requirements &#8211; Very adaptable to many soils, tolerates some dryness and pollution, prefers full sun<br \/>\nComments &#8211; Obtained in 2005 from Femrite Nursery Company. The compact growth habit gives this plant the unusual combination of a formal appearance in a low maintenance tree. Mature size is said to be half the size of the species.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Sambucus_Black_Lace.jpg\" alt=\"\" width=\"448\" height=\"336\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/336;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Sambucus_Black_Lace2.jpg\" alt=\"\" width=\"336\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 336px; --smush-placeholder-aspect-ratio: 336\/448;\" \/><\/p>\n<p><strong>Sambucus nigra &#8216;Eva&#8217; PP 15,575<br \/>\nBlack Lace Elder<\/strong><br \/>\nGrowth Habit &#8211; Upright<br \/>\nHeight: 6-8&#8242;<br \/>\nSpread: 8-10&#8242;<br \/>\nFlowers &#8211; This plant blooms in early summer on old wood with creamy, pink flowers.<br \/>\nFoliage &#8211; Black-purple, finely cut<br \/>\nHardiness Zone &#8211; 4<br \/>\nCultural Requirements &#8211; Prefers moist soils but will tolerated dry conditions. Adaptable to acid or alkaline soil. Grows well in sun to part-sun.<br \/>\nComments &#8211; Obtained in 2005 from Proven Winners. The dark foliage makes it effective in groupings or masses. It is a good shrub for use in the landscape or as a potted shrub on the patio. Would be a good cold hardy alternative to Japanese maple. Blackish red berries appear in fall which can be harvested for making elderberry wine and jam, or left on the plant to attract birds and other wildlife.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Syringa_pekinsis2.jpg\" alt=\"\" width=\"448\" height=\"336\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 448px; --smush-placeholder-aspect-ratio: 448\/336;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Syringa_pekinsis.jpg\" alt=\"\" width=\"336\" height=\"448\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 336px; --smush-placeholder-aspect-ratio: 336\/448;\" \/><\/p>\n<p><strong>Syringa pekinensis<br \/>\nPeking Lilac<\/strong><br \/>\nGrowth Habit &#8211; Rounded<br \/>\nHeight: 20&#8242;<br \/>\nSpread: 20&#8242;<br \/>\nFlowers &#8211; Cream colored flowers bloom in three to six inch panicles in early summer.<br \/>\nFoliage &#8211; Medium green<br \/>\nFall Foliage &#8211; Light yellow<br \/>\nHardiness Zone &#8211; 3<br \/>\nCultural Requirements &#8211; Prefers full sun to partial shade. Tolerates some drought and is pH adaptable.<br \/>\nComments &#8211; Obtained in 1981 from Valley Nursery. It is mainly grown multi-stemmed and develops an upright arching, loose and open growth habit. The exfoliated red to brown bark adds interest to the winter landscape.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Cercidphyllum_japonicum2.jpg\" alt=\"\" width=\"282\" height=\"203\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 282px; --smush-placeholder-aspect-ratio: 282\/203;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Cercidphyllum_japonicum.jpg\" alt=\"\" width=\"234\" height=\"303\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 234px; --smush-placeholder-aspect-ratio: 234\/303;\" \/><\/p>\n<p align=\"left\">Cercidphyllum japonicum<\/p>\n<p align=\"left\">Katsuratree<\/p>\n<p>Growth Habit \u2013\u00a0 narrowly pyramidal as young tree and variable as it matures.<\/p>\n<p>Height: \u00a015-20\u2019 at CSU, 40-60\u2019 in literature<\/p>\n<p>Spread: \u00a010-15\u2019 at CSU, 20-30\u2019 in literature<\/p>\n<p>Flowers \u2013\u00a0 not showy<\/p>\n<p>Foliage \u2013\u00a0 emerge reddish purple and change to blue green<\/p>\n<p>Hardiness Zone &#8211;\u00a0 4<\/p>\n<p>Fall Foliage \u2013 bright yellow<\/p>\n<p>Cultural Requirements \u2013\u00a0 prefers moist soil and full sun.\u00a0 Adaptable to various soil pH.<\/p>\n<p>Comments \u2013\u00a0\u00a0 Has a very pleasing scent as leaves drop in Fall \u2013 somewhat like toasted marshmallows or brown sugar.\u00a0 Obtained in 1981.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Chamaecyparis_pisifera_Filifera_Aurea.jpg\" alt=\"\" width=\"294\" height=\"239\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 294px; --smush-placeholder-aspect-ratio: 294\/239;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Chamaecyparis_pisifera_Filifera_Aurea2.jpg\" alt=\"\" width=\"299\" height=\"238\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 299px; --smush-placeholder-aspect-ratio: 299\/238;\" \/><\/p>\n<p align=\"center\">Chamaecyparis pisifera <strong>&#8216;F<\/strong>ilifera Aurea&#8217;<\/p>\n<p>Stringleaf Japanese Falsecypress<\/p>\n<p>Growth Habit \u2013\u00a0 mounding or broad cone shape with weeping branches<\/p>\n<p>Height: \u00a04-6\u2019 at CSU, 15-20\u2019 literature<\/p>\n<p>Spread: \u00a05-8\u2019<\/p>\n<p>Foliage \u2013\u00a0 drooping, long, thread-like foliage, yellow\/green<\/p>\n<p>Hardiness Zone &#8211;\u00a0 5<\/p>\n<p>Cultural Requirements \u2013\u00a0 prefers moist, well-drained soil and full sun or partial shade, does not like windy sites<\/p>\n<p>Comments \u2013\u00a0 the weeping, thread-like foliage provides excellent texture and color.\u00a0 Foliage is\u00a0 attractive in winter.\u00a0 Obtained in 1983.\u00a0 Grows slowly.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Hydrangea_paniculata_Tardiva.jpg\" alt=\"\" width=\"226\" height=\"262\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 226px; --smush-placeholder-aspect-ratio: 226\/262;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Hydrangea_paniculata_Tardiva4.jpg\" alt=\"\" width=\"261\" height=\"194\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 261px; --smush-placeholder-aspect-ratio: 261\/194;\" \/><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Hydrangea_paniculata_Tardiva5.jpg\" alt=\"\" width=\"324\" height=\"229\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 324px; --smush-placeholder-aspect-ratio: 324\/229;\" \/><\/p>\n<p>Hydrangea paniculata &#8216;Tardiva\u2018<\/p>\n<p>Late Panicle Hydrangea<\/p>\n<p>Growth Habit \u2013\u00a0 upright, coarse<\/p>\n<p>Height:\u00a0 4-6\u2019 at CSU, 6-8\u2019 catalog<\/p>\n<p>Spread: \u00a04-5\u2019 at CSU, 8-10\u2019 catalog<\/p>\n<p>Flowers \u2013 White, buds have pink edges. 6\u201d panicles, blooms on new wood in late-August thru September<\/p>\n<p>Foliage \u2013\u00a0\u00a0 medium to dark green<\/p>\n<p>Hardiness Zone &#8211;\u00a0 3<\/p>\n<p>Fall Foliage \u2013\u00a0 yellow, fair to good<\/p>\n<p>Cultural Requirements \u2013\u00a0 adaptable but prefers loamy, moist soil.\u00a0 Urban tolerant.\u00a0 Takes sun or part-shade.<\/p>\n<p>Comments \u2013\u00a0 Later blooming than most hydrangeas \u2013 good for late season color.\u00a0 Reportedly resistant to Japanese beetle.\u00a0 Obtained in 1998.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Magnolia_soulangiana_Alexander.jpg\" alt=\"\" width=\"204\" height=\"285\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 204px; --smush-placeholder-aspect-ratio: 204\/285;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Magnolia_soulangiana_Alexander2.jpg\" alt=\"\" width=\"218\" height=\"288\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 218px; --smush-placeholder-aspect-ratio: 218\/288;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/2008Photos_for_Web\/Superior%20Plants\/Magnolia_soulangiana_Alexander3.jpg\" alt=\"\" width=\"190\" height=\"232\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 190px; --smush-placeholder-aspect-ratio: 190\/232;\" \/><\/p>\n<p>Magnolia x soulangiana \u2018Alexandria\u2019<br \/>\nAlexandria Saucer Magnolia<\/p>\n<p>Growth Habit \u2013\u00a0 upright oval<\/p>\n<p>Height: \u00a010-12\u2019 at CSU, 20-30\u2019 in literature<\/p>\n<p>Spread: \u00a010-12\u2019 at CSU, 20-30\u2019 in literature<\/p>\n<p>Flowers \u2013\u00a0 large, attractive bicolor of rose-purple outside and white inner petals, blooms in mid-April<\/p>\n<p>Foliage \u2013\u00a0 medium green<\/p>\n<p>Hardiness Zone &#8211;\u00a0 4<\/p>\n<p>Fall Foliage \u2013\u00a0 yellow<\/p>\n<p>Cultural Requirements \u2013\u00a0 prefers moist, deep soil and full sun<\/p>\n<p>Comments \u2013\u00a0\u00a0 Early to flower and makes a dramatic statement at the end of winter.\u00a0 Flower buds susceptible to early frost and prefer protected area.\u00a0 Obtained in 1980.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Malus-%27Guenevere%27.jpg\" alt=\"\" width=\"360\" height=\"243\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 360px; --smush-placeholder-aspect-ratio: 360\/243;\" \/><\/p>\n<p align=\"left\"><strong><em>Malus<\/em> &#8216;Guinzam&#8217;<br \/>\nGuinevere Crabapple<\/strong><br \/>\nHabit &#8211; Dwarf tree with rounded habit.<br \/>\nHeight: 8-10&#8242;, spread: 10&#8242;<br \/>\nFlowers &#8211; pink buds open to white flowers in late May<br \/>\nFruit &#8211; Bright red fruit, 3\/8&#8243;, persistent<br \/>\nFall Foliage &#8211; yellow<br \/>\nCultural Requirements &#8211; well drained and moderately moist soil, sun.<br \/>\nComments &#8211; No significant disease problems. Received in 1992 from Bailey Nurseries and has done well in our research plots.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Juniper-%27Mini-Arcadia%27.jpg\" alt=\"\" width=\"288\" height=\"197\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 288px; --smush-placeholder-aspect-ratio: 288\/197;\" \/><\/p>\n<p><strong><em>Juniperus sabina<\/em> &#8216;Mini Arcadia&#8217;<br \/>\nMini Arcadia Savin Juniper<\/strong><br \/>\nGrowth Habit &#8211; a lower and more spreading growth habit than &#8216;Arcadia&#8217;. Very uniform appearance.<br \/>\nHeight: 1-2&#8242;, spread: 5-8&#8242;<br \/>\nFall Foliage &#8211; keeps soft green color all winter<br \/>\nCultural Requirements &#8211; Can tolerate dry soils and is adaptable. Sun.<br \/>\nComments &#8211; Not as susceptible to Juniper blight as compared to J. horizontalis. Received from the Greenleaf Nursery in 1988.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Cercocarpus-ledifolius.jpg\" alt=\"\" width=\"287\" height=\"239\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 287px; --smush-placeholder-aspect-ratio: 287\/239;\" \/> <img decoding=\"async\" data-src=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Cercocarpus-bark.jpg\" alt=\"\" width=\"167\" height=\"238\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 167px; --smush-placeholder-aspect-ratio: 167\/238;\" \/><\/p>\n<p><strong><em>Cercocarpus ledifolius<\/em><br \/>\nCurleaf Mountain Mahogany<\/strong><br \/>\nGrowth Habit &#8211; open spreading habit, irregular<br \/>\nHeight: 10-20&#8242;, spread: 8-12&#8242;<br \/>\nLeaves &#8211; tough, leathery, dark green leaves with edges that curl under. Evergreen.<br \/>\nFruits &#8211; seeds have &#8220;fuzzy tails&#8221; which provide fall interest<br \/>\nCultural Requirements &#8211; sun, drought tolerant.<br \/>\nComments &#8211; When pruned into a small tree it shows off a very attractive silver\/gray bark. Received from Fort Collins Nursery in 1982.<\/p>\n<p>Funded by: Agricultural Experiment Station Project 713, J. Frank Schmidt &amp; Son Foundation, Colorado Nurseryman Research &amp; Education Foundation, Colorado Tree Coalition and various nurseries throughout the state and country. In-kind donations were received from Organix, and the City of Fort Collins.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text]Currently there are about 1100 different taxa of woody plants being evaluated in the arboretum area at the W. D. Holley Plant Environmental Research Center (PERC) on the Colorado State University campus. The woody plants are evaluated yearly for growth rate, hardiness, growth habit, foliage characteristics, flower &amp; fruit characteristics, disease and insect resistance and&hellip;<\/p>\n","protected":false},"author":9,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-66","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Superior Woody Plants - Landscape Plants<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agsci.colostate.edu\/landscapeplants\/superior_woody_plants\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Superior Woody Plants - Landscape Plants\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column][vc_column_text]Currently there are about 1100 different taxa of woody plants being evaluated in the arboretum area at the W. 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The woody plants are evaluated yearly for growth rate, hardiness, growth habit, foliage characteristics, flower &amp; fruit characteristics, disease and insect resistance and&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/agsci.colostate.edu\/landscapeplants\/superior_woody_plants\/\" \/>\n<meta property=\"og:site_name\" content=\"Landscape Plants\" \/>\n<meta property=\"og:image\" content=\"https:\/\/webdoc.agsci.colostate.edu\/landscapeplants\/woody\/pictures\/Buxus%20microphylla%20koreana%20%27julia%20jane%27.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/\",\"url\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/\",\"name\":\"Superior Woody Plants - Landscape Plants\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/webdoc.agsci.colostate.edu\\\/landscapeplants\\\/woody\\\/pictures\\\/Buxus%20microphylla%20koreana%20%27julia%20jane%27.jpg\",\"datePublished\":\"2015-05-04T22:31:28+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/#primaryimage\",\"url\":\"https:\\\/\\\/webdoc.agsci.colostate.edu\\\/landscapeplants\\\/woody\\\/pictures\\\/Buxus%20microphylla%20koreana%20%27julia%20jane%27.jpg\",\"contentUrl\":\"https:\\\/\\\/webdoc.agsci.colostate.edu\\\/landscapeplants\\\/woody\\\/pictures\\\/Buxus%20microphylla%20koreana%20%27julia%20jane%27.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/superior_woody_plants\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Superior Woody Plants\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/#website\",\"url\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/\",\"name\":\"Landscape Plants\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/agsci.colostate.edu\\\/landscapeplants\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Superior Woody Plants - Landscape Plants","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/agsci.colostate.edu\/landscapeplants\/superior_woody_plants\/","og_locale":"en_US","og_type":"article","og_title":"Superior Woody Plants - Landscape Plants","og_description":"[vc_row][vc_column][vc_column_text]Currently there are about 1100 different taxa of woody plants being evaluated in the arboretum area at the W. D. Holley Plant Environmental Research Center (PERC) on the Colorado State University campus. 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