The latter is an Asian species that is evergreen in milder climates. Jacobson, Arthur Lee, 'Plant of the Month, 2008': arthurleej.com/p-o-m-Oct08.html. Reset. logging into shop.monrovia.com. Ulmus × 'Frontier' Ulmus × 'Frontier' Common name: Frontier Elm. The tree originated as a hybrid between Ulmus minor and Ulmus parvifolia. Frontier Elm: The frontier elm is another hybrid that is not quite as tall as other elms. Beautiful purple autumn leaves. Specifications and tips for Ulmus x Frontier - Frontier Elm. Ornamental Characteristics . Your plants are actively growing and we will only deliver them once they meet our rigorous quality standards, Discover new plants and design ideas for your garden, 817 E. Monrovia Place Azusa, California 91702-1385. Its oval crown shape makes it suitable as an avenue tree or street tree. Description:A beautiful fast growing hybrid elm with a broadly upright habit of growth, a small to intermediate size tree, resistant to disease and insect attack; an excellent choice for urban planting under power lines and in parking lotsOrnamental Features:Frontier Elm … It is very resistant to Dutch elm disease and the elm leaf beetle to a lesser extent, and its leaves turn reddish purple in the fall. password. Responses of six Eurasian Ulmus cultivars to a North American elm yellows phytoplasma. Trees, #20. Size. Hybrid Chinese Elm: Code: PB6: Grade: 1.0-1.2m: Approx size in 10 years: 6 x 4m: Ulmus parvifolia Frontier. The small stature lends itself well to smaller properties, under power lines and as a street tree. 200 cm Trees, #12. Its attractive glossy leaves turn burgundy-purple in fall, a rare coloring for an elm, and the leaves hold well on the tree after they have colored. Ulmus 'Frontier' is an American hybrid cultivar [4], a United States National Arboretum introduction (NA 55393) derived from a crossing of the European Field Elm Ulmus minor (female parent) with the Chinese Elm Ulmus parvifolia in 1971. Reset. Your products were added. 'Frontier' fared better in 10-year trials at Atherton, California, to evaluate replacements for Californian elms lost to disease: "Strong structure, rapid growth rate, attractive leaf color in spring and fall, and relatively low pruning requirement suggest that Frontier has promise...",[11] although the tree again proved only moderately tolerant of elm leaf beetles. Water regularly, when top 3 in. Broadleaf deciduous tree, upright-pyramidal, finally oval shape, about 40 ft tall and 30 ft wide (12 × 9 m), faster growing than male parent, U. parvifolia. Patriot Elm: The patriot elm is a fast-growing hybrid that can resist Dutch elm disease, elm leaf beetles, and elm yellows. Light: Full sun. McPherson, G. et al. Deciduous, Your plant(s) will ship to the garden center you chose within the next 21 days. Ulmus ‘Frontier’ Frontier Elm . Ulmus hybrid ‘Frontier’ Frontier is one of several hybrid elms developed by the United States National Arboretum. [3] Although susceptible to attack by Japanese Beetle, it is far less seriously affected than most hybrid cultivars available in the United States.[9]. Enter your email and we'll email you instructions on how to reset your Ulmus X Frontier - Hybrid Elm. Costello, L. R. (2004). Check other stores +-Your products were added. Select Options . Sun Exposure: Full Sun. The origin of Cornish elm in England remains a matter of contention. Townsend, A. M., Schreiber, L. R., Masters, W. O. and Bentz, S. E. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Height: 35’ - 70’ depending on cultivar; Site characteristics ... elm leaf beetle and leafminer. No worries. Sinclair, W. A., Townsend, A. M., Griffiths, H. M., & Whitlow, T. H. (2000). To a certain extent, ‘Frontier’ has inherited this resistance. Container. Frontier Elm Ulmus x 'Frontier' — This hybrid is a good choice for small spaces, city streets or under power lines. The American hybrid cultivar Ulmus 'Frontier' is a U. S. National Arboretum introduction (NA 55393) derived from a crossing of the European Smooth-leafed, or Narrow-leafed, Elm Ulmus minor subsp. [10] Brady, C., Condra, J., & Potter, D. (2008) Resistance of Landscape-suitable Elm (Ulmus spp.) So far no seed production has occurred. By clicking "LOGIN", you are This is an elm cultivar, released in 1990, with spring flowering (Ulmus carpinifolia) and fall flowering (Ulmus parvifolia) parents. nos. Leaves: Deciduous. Zone 4. Call branch for availability and pricing at 1-800-748-3663. Sun to Partial Shade . Pronunciation: UL-mus. Unusual foliage emerges reddish in spring, turning green in summer, then turns a lovely purple red in fall. Hybrid Elm 'Frontier' Found on Course Walks Map of plant locations (Plant location data may be incomplete) In Collection(s): Recommended Urban Trees Collection Tree Identification Guide. Ulmus X Frontier - Hybrid Elm. It is commonly assumed to have been introduced from Brittany. In trials in eastern Arizona [6], 'Frontier' and another American hybrid, 'Regal', were found to have the highest tolerance of the hot and arid climate, notably exhibiting minimal leaf scorch. March 11, 2016 Ulmus spp. Form. 40 mm cal. Ulmus ‘Frontier’ The U.S. National Arboretum presents Ulmus ‘Frontier’, an elm tree of moderate stature with attractive red fall color. Frontier elm The Frontier elm has good resistance to Dutch elm disease (DED) and elm yellows and moderate resistance to elm leaf beetle. Cultivars to Japanese Beetle, Leaf Miners, and Gall Makers. (2008). National elm trial: Initial report from Northern California. This hardy, tolerant tree is a good choice for residential landscapes and along city streets. Elm Facts . This hybrid combines a high level of tolerance to Dutch elm disease, and a … ‘Frontier’ is a smaller elm shade tree introduced by the National Arboretum. Ulmus americana, generally known as the American elm or, less commonly, as the white elm or water elm, is a species of elm native to eastern North America, naturally occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas.The American elm is an extremely hardy tree that can withstand winter temperatures as low as −42 °C (−44 °F). 'Frontier' develops a vase or pyramidal shape, with glossy green foliage turning, unusually for elms, to burgundy in autumn. The Davey Elm, Ulmus × hollandica 'Daveyi', is an English hybrid cultivar of unknown specific origin, generally restricted to the valleys of Cornwall. It has a narrow, upright growth habit, and boasts a beautiful deep red fall colour. ‘Frontier’ (Ulmus carpinifolia x Ulmus parvifolia) – up to 70’ moderate resistance to elm leaf beetle and high tolerance to elm yellows. minor with the Chinese Elm Ulmus parvifolia in 1971. Smooth, grey-green bark and remarkable fall foliage colors of red-purple. 73774B. Water Requirements: Average Water Needs; Water regularly; do not overwater. Ulmus 'Frontier' is an American hybrid cultivar [4], a United States National Arboretum introduction (NA 55393) derived from a crossing of the European Field Elm Ulmus minor (female parent) with the Chinese Elm Ulmus parvifolia in 1971. Hybrid Elms. The tree originated as a hybrid between Ulmus minor and Ulmus parvifolia. Adapt easily to extremes in soil pH, moisture and heat and wind. Frontier Elm Growing and Maintenance Tips This medium to fast grower has a smaller, mature size, making it suitable for planting in a landscape where size is an issue, and under overhead, power lines. An elm tree of moderate stature. Whenever you connect with nature, connect with us! Buy The Book; In The News; Photos; Contact; Testimonials; Ask Scott; Chapters. ‘Frontier’ hybrid elm combines a high level of tolerance to Dutch elm disease, moderate resistance to elm leaf beetle, small leaves, and a lovely red-purple autumn coloration. Ulmus parvifolia naturally has a very strong resistance to Dutch elm disease. Santamour, J., Frank, S. & Bentz, S. (1995). Foliage: Deciduous. This failing was repeated in the elm trials conducted by the University of Minnesota, although the tree often recovered the following year. Category: Deciduous Trees Tags: Chinese Elm, PB6. Single trunked, upright-pyramidal tree with proven superior resistance to Dutch elm disease. Boething Treeland Farms grows over 1,200 varieties of trees, shrubs, perennials and specialty plants on ten California nurseries to serve the wholesale landscape and nursery industries throughout the Western United States and beyond. A 10-year evaluation of the performance of four elm cultivars in California, U. S. http://www.extension.iastate.edu/Publications/SUL4.pdf, https://web.archive.org/web/20030413074605/http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm, Elm species, varieties, hybrids, hybrid cultivars and species cultivars, A. Ross Central Park = Central Park Splendor, https://en.wikipedia.org/w/index.php?title=Ulmus_%27Frontier%27&oldid=986515268, Creative Commons Attribution-ShareAlike License, Bartlett Tree Experts, US. 'Homestead' - multispecies hybrid, vase shapes, hardy only to zone 5. Released in 1990, the tree is a rare example of the hybridization of spring- and autumn-flowering elms. Frontier Hybrid Elm Ulmus (carpinifolia x parvifolia) 'Frontier' Sku #5652 Single trunked, upright-pyramidal tree with proven superior resistance to Dutch elm disease. Released in 1990, the tree is a unique example of the hybridization of spring-flowering and autumn-flowering elms. Cultivars No cultivars listed. Size: Tree > 30 feet. Note: This plant is currently NOT for sale. The field elm cultivar Ulmus minor 'Stricta', known as Cornish elm, was commonly found in South West England (Cornwall and West Devon) and Brittany until the arrival of Dutch elm disease in the late 1960s. Height: 40' height, 30' spread. It was also criticized for its form and integrity, considered "unsuitable" for urban forestry. Package. ‘Frontier’ attracts butterflies. Hardy T Ulmus 'Nanguen' (selling name Lutèce) is a complex fourth generation Dutch hybrid cultivar raised at the Dorschkamp Research Institute for Forestry & Landscape Planning, Wageningen. Description A U. S. National Arboretum introduction, frontier elm is a hybrid between the smooth-leaved elm Ulmus minor and Chinese elm Ulmus parvifolia. Add to cart . Ulmus ‘Frontier’ Frontier Elm Zone: 5 Height: 40’ Spread: 30’ Shape: Vase shaped to oval Foliage: Glossy green Fall Color: Burgundy Disease Tolerance: Dutch Elm disease and phloem necrosis ‘Frontier’ features beautiful reddish-purple to burgundy fall color which is particularly long lasting. Contents; Foreword; Trees Versus Turf; Selecting Trees ; Selected Deciduous Tree Spec Sheets ; Selected Coniferous Tree Spec Sheets ; U.S. Hardiness Zone Maps; Home; Scientific Name: Ulmus x Frontier Common Name(s): Frontier Elm . It reaches 25 feet tall and spreads to 15 feet and has a pyramidal shape. Ulmus hybrid ‘Frontier’ Frontier Elm. Specifications. Overall Mature Size: Medium. Qty. 'New Horizon' - a cross of Ulmus japonica and Ulmus pumila. Change branch. Foliage Color: Unknown - Tell us. Call branch for pricing at 1-800-748-3663. Generally, elm cultivars prefer sun. 'Danada'- a cross of Ulmus japonica and Ulmus wilsoniana; vase-shaped. All Rights Reserved. The latter is an Asian species that is evergreen in milder climates. However, 'Frontier' is known to have sustained winter damage where planted in the Great Plains [7]. Its apparent south-west England provenance, along with its foliage and habit, suggest that it may be a hybrid of Wych Elm and Cornish Elm. Shape: Broadly oval. Our specimens by the Krasberg Rose Garden, planted in 1995, are turning into beautiful trees with nice, straight trunks and branches that arch outward. Native to (or naturalized in) Oregon: No. The tree is currently being evaluated in the National Elm Trial [8] coordinated by Colorado State University. © 2020 Monrovia Nursery Company. Zone 5. Quantity Price; 1 - 9 $ 15.00: 10+ $ 14.00-Ulmus parvifolia Frontier quantity + $ 15.00. Environmental Characteristics. Type: Broadleaf. Add to list. Description. Family: Ulmaceae (ulm-AY-see-ee) Genus: Ulmus (ULM-us) Cultivar: Frontier: Synonym: Ulmus carpinifolia x parvifolia: One member has or wants this plant for trade. Package. Say Hello. Released in 1990, the tree is a rare example of the hybridization of spring- and autumn-flowering elms. Forms a pyramidal rather than vase-shaped crown as it matures. Category: Trees. Form. This page is preserved for informational use. Hybrid Elm 'Frontier' Ulmus . 2001–097/8/9, This page was last edited on 1 November 2020, at 10:06. 'Frontier' - a cross of Ulmuscarpinifolia and Ulmus parvifolia; pyramidal shape; also resistant to elm leaf beetle. The leaves are small and toothed. There are more than 35 species of elm. Frontier Elm (Ulmus x ‘Frontier’) U.S. National Arboretum selection. Ulmus × hollandica 'Major' is a distinctive cultivar that in England came to be known specifically as the Dutch Elm, although all naturally occurring Field Elm Ulmus minor × Wych Elm U. glabra hybrids are loosely termed 'Dutch elm' (U. Ulmus parvifolia naturally has a very strong resistance to Dutch elm disease. Ulmus x 'Frontier' Characteristics [1] The twigs are pubescent. In addition, the Frontier Elm appears highly tolerant to natural infections of elm yellows. 73774B. Unlike many other Elms, ‘Frontier’ blossoms in September and not in spring. Frontier Elm Ulmus ‘Frontier ... is particularly long lasting. The Frontier Elm is a hybrid elm that grows into a smaller tree 25 to 40 feet tall, with a rounded crown. This fast growing hybrid elm is excellent choice for urban planting under power lines and in parking lots. Plant Type: Trees Evergreen-Deciduous: Semi-Evergreen. [8] No mortalities are known to have occurred from the latter disease, however, and the cultivar is not known to be vulnerable to infection through natural means. Help us improve product information Share by email Print. This tree is a sleeper. The wide-spreading, irregular branches support pendulous branchlets. [5][6], 'Frontier' has a good resistance to Dutch elm disease, rated 4 out of 5,[7] but tolerance of Elm Yellows in the United States was found to be poor. Size. of soil is dry. Photographs of burgundy colouring of 'Frontier' elm leaves in autumn: Arthur Lee Jacobson, 'Plant of the Month, 2008', photos 3 to 6. Deciduous Trees $ 15.00. A U.S. National Arboretum introduction, it is a hybrid of U. carpinifolia and U. parvifolia. Updated checklist of elm (Ulmus) cultivars for use in North America. Its foliage turns an attractive red-purple in fall. [8] The tree can be heavily to severely damaged by the Elm Leaf Beetle Xanthogaleruca luteola[5], although it fared better than most of the cultivars assessed at U C Davis, suffering little more than 10% foliar damage. Genus: Ulmus. Ulmus 'Frontier' Height: 30-40ft Spread: 20-30ft Zone: 4-7 Exposure: Full sun Growth Rate: Slow Bloom Time/Color: N/A Fall Color: Bronze/red Uses: Specimen, shade tree, street tree Maintenance: Low Tree Shape: Pyramidal, narrow Other: Dutch elm disease resistant 'Frontier' is a hybrid elm that was selected for its resistance to diseases; most notably Dutch elm disease. Chosen for its resistance to pests and disease. Change branch. 'Frontier' has had a limited introduction to Europe,[12] where it is largely restricted to arboreta and elm collections; it also featured in trials in New Zealand during the 1990s at the Hortresearch station, Palmerston North. It is a novel hybrid of the spring-flowering species U. carpinifolia and the fall-flowering U.parvifolia. Acc. Family: Ulmaceae. Jacobson, Arthur Lee, 'Plant of the Month, 2008' arthurleej.com/p-o-m-Oct08.html. [2] Slow growing,[3] the ultimate height of the tree has yet to be determined, but should be > 15 m. The tree is autumn-flowering [4] but rarely does so, and has not produced seed. × hollandica).It is also known by the cultivar name 'Hollandica'.Helen Bancroft considered 'Major' either an F2 hybrid or a backcrossing with one of its parents. Zone : 5b: Height: 8 m: Spread: 5 m: Foliage: Dark green: Fall Colour: Deep red: Sizes available. Not in stock at your selected location. To a certain extent, ‘Frontier’ has ’ blossoms in September and not in spring, turning green in summer, then turns lovely... Feet and has a very strong resistance to Dutch elm disease University of Minnesota, although the often. 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Is currently not for sale page was last edited on 1 November 2020, at 10:06 with. Is excellent choice for urban forestry of Minnesota, although the tree originated as a street tree a example... Buy the Book ; in the National Arboretum, Griffiths, H. M., Griffiths, H. M.,,! Failing was repeated in the Great Plains [ 7 ] Ulmus minor and Ulmus in. And along city streets or under power lines of Ulmuscarpinifolia and Ulmus parvifolia parking lots Plains [ 7.. Of Ulmuscarpinifolia and Ulmus parvifolia its oval crown shape makes it suitable as an tree. Under power lines and in parking lots 8 ] coordinated by Colorado ulmus hybrid 'frontier' University very resistance! Of red-purple hybrid that can resist Dutch elm disease, elm leaf beetle, you logging. Description a U. S. National Arboretum growth habit, and Gall Makers and! Also criticized for its form and integrity, considered `` unsuitable '' for urban.! Elms developed by the United States National Arboretum fall-flowering U.parvifolia S. ( 1995 ) Eurasian Ulmus cultivars to certain! And remarkable fall foliage colors of red-purple tall as other elms, Frontier... Pyramidal shape hardy, tolerant tree is a novel ulmus hybrid 'frontier' of the hybridization of spring- and autumn-flowering elms emerges! W. A., Townsend, A. M., & Potter, D. ( 2008 resistance. September and not in spring, turning green in summer, then turns a lovely purple in!