Please cite the EDDMapS as: EDDMapS. Most invasive species websites treat this as one type, under Pyrus calleryana. The leaves are alternate, simple, 2 to 3 in. Pyrus calleryana ‘Bradford’ is one genotype. Foliage The leaves are alternate, simple, 2-3 in. It is a deciduous tree that can grow up to 60 ft. (18 m) in height and 2 ft. (0.6 m) in diameter. Flower Early Detection & Distribution Mapping System. Bradford pear is a cultivar of Pyrus calleryana. contributors include: Committee Members: Leslie Cameron, Tyler Ormsby, Marilyn Thomson, & Rachel Vecchio The "Bradford" pear tree (Pyrus calleryana) was once the favored type of ornamental pear trees. Post was not sent - check your email addresses! It is propagated asexually (by grafting and cuttings) and does not change over time. Family: Rosaceae. Webmaster: Elena Rodriguez. It is an upright-branched ornamental tree. Prescribed fire is a common management technique in prairie ecosystems to mimic natural disturbances. According to the U.S Forest Service, Invasive species have contributed to the decline of 42% of U.S. endangered and threatened species, and for 18% of U.S. endangered or threatened species. Native Alternatives Ecological Threat Callery pear was imported multiple times to the U.S., including the first introduction in 1909 to the Arnold Arboretum and an introduction in 1916 by the U.S. Department of Agriculture for development of fire blight resistance in the common pear (Pyrus communis), which was devastating the commercial pear industry. Callery pear (Pyrus calleryana Decne.) was introduced to North America as an ornamental tree in the early 1900s.Due to widespread planting, P. calleryana has become common throughout the eastern United States and has invaded natural areas, especially disturbed areas. It is a deciduous tree that can grow up to 60 ft. (18 m) in height and 2 ft. (0.6 m) in diameter. across; fruits mature in fall and are small, hard, brown, and almost woody. Today, while the tree has its admirers, city planners are thinking twice before including it into the urban landscape. Prevention and Control Tree Characteristics It is native to China and Vietnam. Callery pear has invasive traits that enable it to spread aggressively. Branching on Callery pears is close to 90 degrees, with shorter, stouter limbs and sort (1") spines, as opposed to the "Bradford" pear, with an overall shape of the tree described as a tear-drop that often spreads out with age; longer branch… Pyrus calleryana NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. (5.1-7.6 cm) long, petiolate and shiny with wavy, slightly-toothed margins. ization on invasive potential is Pyrus calleryana Decne., com-monly called the Callery pear, a popular ornamental tree, which has as many as 29 commercially available cultivars. Wild forms develop traits of the original trees, including thorns. It grows best in full sun but will tolerate some shading and drought. Consumer demand for unique and novel plant species facilitates the introduction of nonnative species, which are then mass-produced, transported, and distributed locally to gardeners and landscapers. The invasive potential was not even a twinkle in the introducers eyes. . Pyrus calleryana) is a deciduous tree, more commonly known as ‘Bradford pear.’ Native to China, it was first brought to the United States in 1917 for hybrid-ization experiments to improve disease resistance of the common fruiting pear. Some non-sterile cultivars of this species have escaped and are invading natural areas throughout the eastern United States. Bradford pear is a cultivar of Pyrus calleryana. They are sexually reproducing populations consisting of multiple genotypes that recombine every generation. 'Chanticleer' is one of the best ornamental pears for … Graphics: Marilyn Thomson Pyrus calleryana Photo by Gary A. Monroe. Pyrus calleryana 'Bradford', produce sterile fruits because they do not self-pollinate. Has fragrant Flower. "Aristocrat" has a pyramidal shape that is hardier than "Bradford." (2001): Ultimately, this study indicates that increased spread of P. calleryana has been initiated by introduction of multiple cultivar types and subsequent widespread planting and is not the result of an inherent fi tness advantage of hybrid progeny" Spreads: by seeds that are dispersed to new locations by starlings and other birds that eat the fruits. Several native trees would make excellent substitutes for Callery pear, including common serviceberry (Amelanchier arborea), Allegheny serviceberry (Amelanchier laevis), cockspur hawthorne (Crataegus crus-galli), green hawthorne (C. viridis) and the native sweet crabapple (Malus coronaria), although its availability may be limited currently. long; shiny dark green and leathery, small round-toothed margins; scarlet, mahogany, purple hues in fall. The Bradford pear and related cultivars of Pyrus calleryana are regarded as invasive species in many areas of eastern and mid-western North America, outcompeting many native plants and trees. It can spread aggressively outside cultivation. FLOWERING ORNAMENTAL PEAR, CALLERY PEAR. There are many cultivars available for Pyrus calleryana. Do not plant Callery pear or any cultivars including the well known Bradford pear. Editors: Steven Bell, Margaret Brown, Brigitte Coulton, Kimberly Marsho, Marsha Mercer,  & Christa Watters Fish and Wildlife Services consider it a plant invader of Mid-Atlantic natural areas. When most people picture an ornamental pear, this is the cultivar that comes to mind. It is propagated asexually (by grafting and cuttings) and does not change over time. If youre thinking about growing Callery pear trees, keep reading to find out about the care of Callery pear trees and other useful Calleryana information. Callery Pear trees are shallow-rooted and will tolerate most soil types including clay and alkaline, are pest-and pollution-resistant, and tolerate soil compaction, drought and wet soil well. The plants that spread in natural areas are not cultivars. "Autumn Blaze" has a consistent reddish, purple color, for which it is often selected. Summary 5 Pyrus calleryana, the Callery pear, is a species of pear native to China and Vietnam, in the family Rosaceae.It is a deciduous tree growing to 15 to 20 m (49 to 66 ft) tall, often with a conic to rounded crown. Plant: 30-50 ft. tall, 20-30 ft. wide; young trees may be thorny. This plant is classified as a watch species by the California Invasive Plant Council . "Chanticleer," also known as "Cleveland Select," is a nice upright … Pyrus calleryana, commonly called Callery pear, is native to China and Taiwan. 2020. Rose family (Rosaceae). Callery pear, the parent rootstock of the "Bradford", "Aristrocrat", and other cultivars, is an ornamental, deciduous tree that can grow up to 40 ft. (12.2 m) in height. Print Version (Legal Size): Callery Pear (Pyrus calleryana). Subscribe to our website! Just enter your email address below and click "sign me up" to get notified of new updates to our site via email. Although still available in commerce, it should be phased out of production, the eventual goal to completely eliminate the species and cultivars. Native to China. They have been widely planted throughout the United States since the early 1900s as an ornamental. Multiple Flowering Dogwood trees are stunning in n, At 15 to 30 feet tall, Flowering Dogwood is attrac, Master Gardener Organizations in Virginia, Teaching Garden at Fairlington Community Center, Master Gardener Tribute Garden at Fairlington Community Center, Organic Vegetable Garden at Potomac Overlook Regional Park, Educational Videos from Glencarlyn Library Community Garden, Tried & True Native Plants for the Mid-Atlantic, Planting Dates for Arlington and Alexandria, Select On-Line References for Kitchen Gardening, Gardening Basics for Arlington & Alexandria, VA, Community Gardens in Arlington & Alexandria, Between the Rows – A Guide to Vegetable Gardening, Creating Inviting Habitats for the Birds, Butterflies & Hummingbirds. Callery Pear, Pyrus calleryana Callery pear (Pyrus calleryana) is a species of pear tree native to China that was brought to the US in the early 1900’s in an unsuccessful attempt to improve fi reblight resistance in edible pears. Thus, the Bradford pear cultivar is one of several cultivars (varieties) of Callery pear capable of spreading and being invasive. ... Pyrus calleryana Decne. It … Last year, I vowed not to take any more pictures of blooming Callery pear (Pyrus calleryana). Originally brought to the United States from Asia to combat disease affecting the common pear, this non-native tree, including the popular ‘Bradford’ cultivar, is now planted in high density in a variety of urban and suburban settings. Background It grows pyramidal to columnar in youth, but … Native to Asia, the species is in the early stages of widespread invasion in the United States ( Culley and Hardiman, 2007 ), with invasive At one time Callery pear was one of the most popular urban tree species in eastern, central and southern regions of the country. August 3, 2005 version 1 Assessment of Invasive Species in Indiana’s Natural Areas ***OFFICIAL Callery Pear (Pyrus calleryana) ASSESSMENT*** Answers are underlined and in bold, comments are inserted in italics Drafted 8-10-2012 by Ellen Jacquart, Reviewed 8-13-2012 by David Gorden, Brenda Howard, Thus, the Bradford pear cultivar is one of several cultivars (varieties) of Callery pear capable of spreading and being invasive. The National Park and U.S. Seedlings and shallow-rooted plants can be pulled when soil is moist. Flower Often known as “Bradford” or “Cleveland Select” ornamental pear, this foreign invader is one of the greatest scourges of the NNIS (non-native invasive species) world. It was widely planted as a rootstock for common pear long before it gained interest as an ornamental. and questions about the website should be directed to the webmaster. The aggressive non-native callery pear is dominating roadsides and recently disturbed areas throughout Central Ohio. Pyrus calleryana‘Bradford’ is one genotype. Pyrus calleryana Dcne. Different genotypes growing near each other (e.g., within about 300 ft.) can cross-pollinate and produce fruit with viable seed. It favors grasslands and woodlands. Once established Callery pear forms dense thickets that push out other plants including native species that can’t tolerate the deep shade or compete with pear for water, soil and space. http://www.nps.gov/plants/alien/pubs/midatlantic/pyca.htm Exotic plant species which possess characteristics of invasive species and spread easily into native plant communities and displace native vegetation; includes species which are … I have hundreds of pictures including some that I've labeled "Field of Pears." Protecting Yourself From Mosquitoes . Return to the Table of Contents | Download a PDF of Plant Invaders of Mid-Atlantic Natural Areas, APWG HOME PAGE | PCA The Bradford cultivar was widely planted as a promising new ornamental during the 1950s. The various cultivars of this species are more commonly available than the species itself. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. The leaves are oval, 4 to 7 cm (1.6 to 2.8 in) … Common names: Callery pear Pyrus calleryana (Callery pear) is a tree (family Rosaceae) with white flowers and oval-shaped leaves found in the Central Valley of California. Around 1950, the ornamental value and hardiness of Callery pear were recognized, leading to the development of a number of cultivars, including ‘Bradford.’ Cultivars in the U.S. originated from China and represent different genotypes. Ecological Threat. Pyrus calleryana (Callery Pear) is listed in the Invasive Plant Atlas of the United States. It grows pyramidal to columnar in youth, but … Click on each photo to see large images and detailed information. In the northeastern United States, wild Callery pears sometimes form extensive, nearly pure stands in old fields, along roadsides, and in similar disturbed areas. – Callery pear Subordinate Taxa. I never thought I could be so definitive about an invasive plant, but Callery pear is a biological disaster. It can spread aggressively outside cultivation. In addition to writers & photographers credited through bylines (Mary Free, Judy Funderburk, Elaine Mills, Christa Watters & Susan Wilhelm), Introduced, Invasive, and Noxious Plants : Threatened & Endangered: Wetland ... or see all the Pyrus thumbnails at the Plants Gallery Steve Hurst. Scientific name: Pyrus calleryana Pronunciation: PIE-rus kal-ler-ee-AY-nuh Common name(s): 'Bradford' Callery pear Family: Rosaceae USDA hardiness zones: 5A through 9A (Figure 2) Origin: native to Korea and China UF/IFAS Invasive Assessment Status: Invasive and not recommended except for “specified and limited” use approved by the UF/IFAS Invasive Plant Working Group (North, Central, South) Uses: container or planter; street without sidewalk; screen; shade; specimen; parking lot island < 100 sq ft; par… 2020 Invasive Plant Factsheet: Callery Pear (Pyrus calleryana) This non-native tree, including the popular 'Bradford' cultivar, is now planted in high density in a variety of urban and suburban settings. Flowers, fruits and seeds: flowers in early spring before the leaves, white with five petals, about 1 in. . Virginia Cooperative Extension Publications, Virginia Cooperative Extension – Alexandria Office, Virginia Cooperative Extension – Arlington Office. Dr. Additional Common Names. Invasive: Characteristic trunk broken branch in a Callery pear in January.Photo © Elaine Mills, Invasive: Callery pear blooming in April.Photo © Elaine Mills, Invasive: Close up of Callery pear blooming in April.Photo © Elaine Mills, Invasive: Callery pear trees invading the wild along a highway.Photo © Elaine Mills, Invasive: Characteristic trunk growth in a Callery pear.Photo © Elaine Mills. HOME PAGE This greatly accelerates the natural process of introduction, especially given increased global commerce and the availability of plants for purchase over the Internet. While some genotypes are self-incompatible, meaning they require cross pollination from another genotype in order to set seed, others can pollinate themselves. A single tree can spread rapidly by seed and vegetative means forming a sizeable patch within several years. Pyrus calleryana, commonly called Callery pear, is native to China and Taiwan. (5.1-7.6 cm) long, petiolate, and shiny with wavy, slightly toothed margins. Last updated:11-Nov-2010, http://www.nps.gov/plants/alien/pubs/midatlantic/. The flowers are popular with wildlife such as bees. The simplest method of controlling the spread of callery pear is to avoid planting it. It's a 13.5-acre former farm field along I-75 just north of the exit for SR 129. Medium to large trees should be cut down and stumps treated with a systemic glyphosate or triclopyr-based herbicide (see Control Options). New cultivars of Pyrus calleryana were bred to reduce the tree's tendency to split in snow or high winds. Distribution and Habitat Callery pear occurs throughout the eastern U.S. from New Jersey to Illinois and south to Texas. Although most plant species introduced for horti… Its success as an invader results from its capacity to produce copious amounts of seed that is dispersed by birds and possibly small mammals, seedlings that germinate and grow rapidly in disturbed areas and a general lack of natural controls like insects and diseases, with the exception of fire blight. It is not currently invasive but has been ranked as a high risk for becoming invasive in the future. Culley et al. Review of risks should be undertaken before selecting this tree for planting sites. The field is covered with escaped pears; no trees had ever been planted there. A fantastic small tree, Pyrus calleryana 'Chanticleer' has glossy, dark-green foliage that creates a wonderful foil for the mass of white flowers in April-May. The MGNV website is maintained and created by the MGNV Social Media Committee with input from MGNV and VCE. Callery pear trees (Pyrus calleryana) fro… Comments, suggestions, Wild forms develop traits … Foliage The leaves are alternate, simple, 2-3 in. Also, cultivars are often grafted onto seed-grown rootstocks with varying genotypes; if the plant produces shoots from the rootstock (which it often does), then these shoots and the graft can pollinate one another. Promoting environmentally sound gardening practices for over 35 years! Any plant resulting from a seed produced by Pyrus calleryana ‘Bradford’ is a different genotype of Pyrus calleryana and not a member of any cultivar (unless somebody propagates that seedling and names it as a new cultivar). This tree is under observation and may be listed on official invasive species lists in the near future. Are Callery Pear (Pyrus calleryana) Cultivars Invasive? I've been taking shots of the field since 2010. Pyrus calleryana demonstrates the importance of the horticultural pathway in the invasion process. (5.1-7.6 cm) long, petiolate, and shiny with wavy, slightly toothed margins. Sorry, your blog cannot share posts by email. The Callery Pear is an ornamental tree … It is an upright-branched ornamental tree. The University of Georgia - Center for Invasive Species and Ecosystem Health. Leaves: deciduous, alternate, simple, broad-ovate to ovate, 1½-3 in. If white flowers are desired, choose alternate species such as flowering crabapples, serviceberry, Japanese tree lilac, whitebud, yellowwood, or seven-sons-shrub.