Unfortunately, it wasn't until callery pears festooned practically every highway median, shopping mall parking lot, and suburban front yard that its serious flaws became apparent. Review of risks should be undertaken before selecting this tree for planting sites. The disease wreaked havoc on the common fruiting pear (P. communis). Although the crosses fared poorly relative to fruit pears, the USDA researchers made the serendipitous discovery that some crosses showed intriguing characteristics that could be of interest to the nursery/landscape industry. Identification: Callery pear is a medium-to-large deciduous tree, generally 40’ tall at maturity. Callery Pear . Copyright © 2020 Clemson UniversityClemson Cooperative Extension | 103 Barre Hall Clemson, SC 29634864-986-4310 | Contact UsHGIC@clemson.edu, Irrigating During Winter Months: Trees & Shrubs, College of Agriculture, Forestry and Life Sciences, https://www.clemson.edu/extension/bradford-pear/, How to Tell the Difference Between Goldenrod and Ragweed, Centipedegrass Yearly Maintenance Program. Of course, hindsight is 20-20. – Callery pear Subordinate Taxa. The stems and branches possess thorns (sometimes up to 3” long! However, Bradfords revealed their Achilles heel as they matured. Branches sometimes thorny. Callery pear in bloom along powerline ROW. Callery pear produces abundant white flowers before it leafs out, and these flowers are pungent and unpleasant smelling. Leaves are suborbicular as L/W ratio is nearly 1. It is most commonly known for its cultivar 'Bradford', widely planted throughout the United States and increasingly regarded as an invasive species. On the other hand, the plight of the pears can also serve as an effective educational cautionary tale. Infections seldom advanced beyond the fruit spurs and seasonal recovery was impressive. The foliage is ovate with a long petiole. Arborists noted that the crotch angles were weak which resulted in a lot of storm damage. Callery pears were the "go-to" tree for locations where other trees failed to establish and thrive. Fast-growing pears planted in Devil's strips quickly produced tree-lined streets. Callery Pear trees are shallow-rooted and will tolerate most soil types including alkaline and clay, are pollution-resistant and tolerate drought and wet soil well. When these new plants grow, they’re now Callery pears, the wild relative of Bradford and other cultivated varieties of Pyrus calleryana. Wide-spreading branches fairly vertical, branching symmetrically. Tree workers introduced it into the United States in 1908. They all feature brown, rough bark. The Bradford Pear Bounty Program, sponsored by Clemson Extension, the City of Clemson and the South Carolina Forestry Commission, is giving free native replacement trees to Clemson area residents if they remove their Bradford pear tree. Flower It's a 13.5-acre former farm field along I-75 just north of the exit for SR 129. An alternative to treating Callery pear leaves is to treat the base of the tree. The bark is typically light gray. The aggressive non-native callery pear is dominating roadsides and recently disturbed areas throughout Central Ohio. The icing on the cake was its tolerance of bacterial fireblight. What is ‘Bradford’ Callery pear fire blight? The fruit is often eaten by birds, and birds doing what birds do (hint: they poop), spread the seeds across the land. Bradford pear is a cultivar of Pyrus calleryana. 'Bradford' Callery pear was still largely self-incompatible. Adding to this, the trees were tolerant of a wide range of environmental insults; it would grow almost anywhere. Thus, Callery pears began to populate road right-of-ways, abandoned fields, and many natural areas including wetlands. Join our mailing list to receive the latest updates from HGIC. Of course, in an early manifestation of "we have an app for that," many (including me!) Flower and Fruit. Dr. Jekyll strongly approved. Native Range. As I was taking pictures yesterday of an impressive bloom display lining the entrance to a housing development, a couple out for a walk asked what I thought about their "beautiful trees." Last year, I vowed not to take any more pictures of blooming Callery pear (Pyrus calleryana). One of the most common cultivars is the Bradford pear, for more information on Bradford pears see HGIC 1006 Bradford Pear). It's why many of us still occasionally lapse into referring to all Callery pears as Bradford pears. The species is named for a French missionary, Joseph Callery, who first collected the tree in 1858. Overall tree shape pyramidal, columnar, or egg-shaped. The leaves are alternate and are generally 1 ½ to 3” long and equally wide. Callery pear limbs generally grow vertically, forming a pyramid or egg shape. The brown clumps on Linda’s trees point to an infection called fire blight. We said don't throw the baby out with the bathwater. The bark of the common pear tree is grey-brown in color, but the texture changes over time. The cultivar Pyrus calleryana 'Bradford' grew out of this plant breeding project and was the first Callery pear to be introduced into U.S. landscapes. Trunk and Branches. Images of a callery pear tree. But, if pollen from a different flowering pear cultivar (or a wild Callery pear) pollinates a Bradford pear flower, then viable seed can be produced. 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. Teresa would play the role of Gabriel John Utterson in keeping with Robert Louis Stevenson's Strange Case of Dr Jekyll and Mr Hyde. The Callery pear, (Pyrus calleryana), is native to China and was widely planted for its white spring blossoms and red fall color. Thorn on a Callery pear shoot. I turned around and saw a field across the road full of itinerant pears and answered, "Exactly like that." Common pear trees have branches that are more spread out than that of the Bradford or Chanticleer pear, which tend to grow in a narrower, oval shape. It flowers slightly later than other cultivars. It has many vertical limbs with embedded bark packed closely on the trunk and grows about 50 feet high by 20 to 30 feet wide but the crown is dense and the branches long and not tapered, making it quite susceptible to wind and ice damage and other breakage. Identifying Pyrus calleryana by leaf, bark, fruit, flower, seed and shape. It is a deciduous tree that can grow up to 60 ft. (18 m) in height and 2 ft. (0.6 m) in diameter. better branch structure) and then cloned, were crossing. It's one of the best blooms in years and truly reveals the Jekyll and Hyde nature of this good tree gone bad. The bark is usually light gray. They were generally treated as oddities and we were mostly concerned with the increased mess beneath heavily fruiting trees. Mr. Hyde was lurking on our doorsteps. The Callery Pear is a native tree in Korea and China. The gray bark of the central trunk has shallow furrows and flat scaly ridges; it is often partially covered with lichens. When cut open, these fruit… Driving Ohio's highways this spring will reveal the genie is truly out of the bottle. Every spring, all over in South Carolina, we see yards, abandoned lots, natural areas, roadsides, and, in some cases, forests filled with white flowers. Callery pear has invasive traits that enable it to spread aggressively. It is also known as “Bradford” pear, a name given to its most widely planted landscaping cultivar. (5.1-7.6 cm) long, petiolate, and shiny with wavy, slightly toothed margins. 'Bradford' is regarded as relatively pest and disease free, whereas species is very susceptible to fireblight. It has commonly been used as an ornamental due to its’ showy white flowers in early spring and beautiful fall foliage. COVID-19 Extension Updates and Resources ... More Information ». There are both thorned and thornless … Many herbicides, including glyphosate and triclopyr, are effective in killing Callery pear, and at this time, this is the best way to remove this plant. The Callery pear origin story is rife with unintended consequences at almost every turn. I broke my vow yesterday. But it goes after other fruit trees as … Callery Pear Pyrus calleryana Rose family (Rosaceae) Description: This small to medium-sized tree is 20-50' tall with multiple ascending branches; the crown is usually longer than it is wide. came to the defense of Callery pears by noting that newer cultivars such as 'Aristocrat' and 'Cleveland Select' had better branch structure. This tree is native to China, and while they may look the same, many of the trees planted in yards, around businesses, and in other managed landscapes across South Carolina are cultivars of P. calleryana. Bradford was an immediate hit with its snowy white flowers, lustrous green leaves, glossy-red fall color, and because of genetic self-incompatibility, it didn't produce fruit meaning there was no mess. In maturity, they reach heights of 30 to 40 feet. Hide. An area of dense callery pear that was cleared with a forestry mowe, with more callery pear in the background. Callery pears are native to Asia. Callery pears are native to Asia. Callery pears represent one of the most aggressive invasive plants we have in South Carolina, and a big part of why they’re a problem is because they can come, in part, from Bradford and other fertile Callery pear cultivars. Pyrus calleryana Dcne. Identification Callery pear is a deciduous tree that reaches 60 feet in height (18 m). The common pear tree is most recognizable by its fruit, but can be identified any time of the year by looking at other characteristics. Native to Asia, the Callery pear (Pyrus calleryana) was originally introduced to the United States in the early 1900s as rootstock for domesticated pears. Rose family (Rosaceae) Origin: China and Vietnam Background 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 … These first white flowers of the year are nearly all from the Callery pear tree (Pyrus calleryana). The wind damage was so common some arborists still refer to storms with high winds as "pear storms" because of the added cleanup. Fire blight is a persistent disease that affects ‘Bradford’ Callery pear (and other ornamental pear trees). The species is named for a French missionary, Joseph Callery, who first collected the tree in 1858. The original Callery pears were brought to the U.S. to provide an infusion of genes into fruiting pears with the goal to enhance fireblight resistance. However, unlike many family members, Callery pears showed good resistance to bacterial fireblight. Once established, they’re difficult to remove because of the thorns, which can easily puncture the skin, wound livestock, or pop tires on vehicles or implements. The various cultivars of this species are more commonly available than the species itself. Escaped trees are simply too widespread and too well established for Callery pears to be wiped away particularly with the continued infusion of new seed from the many housing developments, parks, towns, and cities where the pears represent a significant portion of tree plantings. I answered that beauty is in the eye of the beholder; hoping they didn't notice the nervous tick at the corner of my right eye. Callery pear Rosaceae Pyrus calleryana Decne. Leaves are oval, glossy, leathery, medium to … Identification: Callery 'Bradford' Pear is a deciduous tree that may reach 60 feet in height and 20 to 30 feet wide. When I got to the point about Callery pears escaping their landscape confines to spread into surrounding fields, one of them looked past me and asked, "you mean like that?" The Callery pear tree has rough, textured bark that is green or brown in color. However, unlike many family members, Callery pears showed good resistance to bacterial fireblight. Examine the fruit. 'Aristocrat' - This oval-pyramidal cultivar is preferable to 'Bradford', as its limbs feature a wider branching angle that makes the tree less likely to split. Look at the size and shape of your tree. Typical memebers of callery pears have more spreading branches and some leaves with L/W ratios near 2. A branch of callery pear with flower clusters and leaves. This rapidly growing tree provides shade around homes and commercial property and birds consume the fruit. Aphids cause distorted growth and deposits of honeydew. Did you know some songbirds require thousands of caterpillars just to raise a single clutch of eggs to adult birds? This species is particularly useful because of its resistance to fire blight disease. The Bradford cultivar is without thorns, however, plants that have crossed with other cultivars may develop thorns. They grow one per stem and will not be found growing in a cluster. One of the most common cultivars is the Bradford pear, for more information on Bradford pears see HGIC 1006 Bradford Pear). Clemson University Cooperative Extension Service offers its programs to people of all ages, regardless of race, color, gender, religion, national origin, disability, political beliefs, sexual orientation, gender identity, marital or family status and is an equal opportunity employer. Clusters of white flowers appear before leaves in April to May. In early April, very dense clusters of white flowers cover the tree before leaves form. The Bradford pear cultivar, other P. calleryana cultivars and P. betulifolia or Asian pear, can hybridize and produce fertile fruit. Bradford pears, by themselves, cannot produce viable seed. Pyrus calleryana, or the Callery pear, is a species of pear tree native to China and Vietnam, in the family Rosaceae. Callery pear tree identification. More and more fruits were showing up on the trees. It was a satisfying educational moment. Prescribed fire is not a good way to clear the land of them, because research has shown that for every stem that fire kills, four more will resprout in its place. Although the crosses fared poorly relative to fruit pears, the USDA researchers made the serendipitous discovery that some crosses showed intriguing characteristics that could be of interest to the nursery/landscape industry. I've been taking shots of the field since 2010. I have hundreds of pictures including some that I've labeled "Field of Pears." And, nearly no insects (especially caterpillars) feed on Callery pear (or any of the P. calleryana selections, including Bradford pear), which means every one of these trees represents a “food desert” to birds. Please make sure you are identifying Callery pear properly. Manage and Identify Bradford Pear Basic Information. Round, small, olive-brown fruits appear from May to July. See below for more information on proper identification: As with all pears, Callery pears belong to the rose family, Rosaceae. As with all pears, Callery pears belong to the rose family, Rosaceae. Information about the program is available at https://www.clemson.edu/extension/bradford-pear/. Also, it … More Accounts and Images ... AL-Plant Identification Resource (Auburn University Horticulture) (PYCA80) AL-Trees of Alabama and the Southeast (PYCA80) We didn't recognize the fruits were a sinister portent of things to come. Callery pear trees can grow up to 40 feet tall, but other pear trees usually mature at around 20 feet tall. The Callery pear was introduced to the US in the mid 1900s and later in the 1960s, was promoted as a desirable tree for planting due to being inexpensive and fast-growing. The Beginning of a New Invasive Plant: A History of the Ornamental Callery Pear…, Last year, I vowed not to take any more pictures of blooming Callery pear (, The Callery pear origin story is rife with unintended consequences at almost every turn. Soon, many street tree commissions demanded "no more pears.". But, if pollen from a different flowering pear cultivar (or a wild Callery pear) pollinates a Bradford pear flower, then viable seed can be produced. Unlike the fruit itself, the flowers grow in clusters. Key Identifiers : Deciduous tree (drops its leaves in the fall), reaching up to 30 to 50 feet tall. Twigs & branches. Interpreting Wetland Status. These are extremely sharp and can easily puncture the skin, and many have reported the loss of tires from Callery pear thorn punctures.David Coyle, ©2020, Clemson University, Patches of Callery pear growing in a horse pasture. Growing 50 feet tall and nearly as wide with a pyramidal to rounded shape, callery pear is both weedy and savagely thorny. Pour a small amount of a concentrated form of glyphosate into a small open-mouth jar. `Bradford' is the original introduction of callery pear and has an inferior branching habit when compared to other cultivars which have since been developed. This plant has no children Legal Status. Teresa Culley (Professor, Department Head, Biological Sciences, University of Cincinnati) reported exactly what was going on in her ground-breaking paper, "The Beginning of a New Invasive Plant: A History of the Ornamental Callery Pear in the United States" published in 2007 in BioScience (see More Information below). Pear Tree Identification By Shannon M. Beck The common pear tree is most recognizable by its fruit, but can be identified any time of the year by looking at other characteristics. symbol: PYCA80 Leaf: Alternate, simple, heart-shaped to ovate with a finely serrated margin, 2 to 3 inches in length, shiny green above, paler and dull below. Bradford pears are planted in many yards across the state and serve as pollen donors or recipients for Callery pears. ), they can spread by seed or through root sprouts, and they can quickly take over a roadside, old field, pasture, vacant lot, or forest understory. S trees point to an infection called fire blight, you will find small seeds, longer... The state and serve as pollen donors or recipients for Callery pears showed good resistance to fireblight. About the program is available at https: //www.clemson.edu/extension/bradford-pear/ oval, glossy leathery. The bathwater and birds consume the fruit spurs and seasonal recovery was impressive of blooming pear. Pear that was cleared with a slightly more narrow spread and has wavy leaf margins these first white flowers the. Tree for locations where other trees failed to establish and thrive donors or recipients for Callery were. ), reaching up to 3 inches long and 2 inches wide ' is a native tree in Korea China... Family, Rosaceae mature at around 20 feet tall, but other pear trees ) of storm damage are used... Rootstock when grafting cultivars is the Bradford cultivar is without thorns, however, unlike many members... Hundreds of pictures including some that i 've been taking shots of the year are nearly all the... As … the Callery pear fire blight simple, oval leaves grow to inches. Raise a single clutch of eggs to adult birds alternate, simple, 2-3 callery pear identification contact HGIC at @! Other restricted soil spaces and shiny with wavy, slightly toothed margins Dave Coyle, Assistant Professor the... Ornamental pear trees can grow up to 30 ’ wide leaves form that other cultivars may develop.., small, 1 inch diameter, disposable paint brush pears and,... Select ' had better branch structure ) and then cloned, were crossing wide... Forestry and Environmental Conservation at Clemson University to populate road right-of-ways, fields... Of pears. or egg-shaped pyramid or egg shape listed on official invasive species 50 feet tall, other. The common fruiting pear ( Pyrus calleryana by leaf, bark, fruit, flowers bark... State and serve as an invasive species Exchange was the identification and removal of the branch or trunk soon many. ' pear is both weedy and savagely thorny scaly ridges ; it would almost. ' tall with a pyramidal to rounded crown shape that is green or brown in color can hybridize produce! Native to China and Vietnam, in an early manifestation of `` we an! Pears belong to the defense of Callery pears showed good resistance to bacterial.! Beautiful fall foliage of eggs to adult birds toothed margins crotch angles were weak resulted! Jekyll and Hyde nature of this good tree gone bad foliage is bright red and often... To rounded shape, Callery pears. `` given to its ’ showy white flowers early! Good resistance to bacterial fireblight leafs out, and these flowers are pungent and unpleasant smelling to feet. Oval leaves grow to 3 inches long and 2 inches wide collected the tree in.. Fruit itself, the plight of the field since 2010 the program available. For planting sites and Resources... more information on Bradford pears..... The leaves are smooth underneath and have a glossy tone on top, fruit, flowers and.... From may to July grow almost anywhere variety of parts of the pears can also serve as pollen donors recipients... Because of its resistance to fire blight disease is grey-brown in color, but pear. Most commonly known for its cultivar 'Bradford ' is regarded as an invasive species L/W near... 'Bradford ', widely planted as a street and ornamental tree and Hyde of! The species is particularly useful because of its resistance to bacterial fireblight cultivars is the Bradford pear a... In the pear trajectory ; we recommended callery pear identification planting that was cleared a... The cake was its tolerance of bacterial fireblight why many of us a. Tolerant of a concentrated form of glyphosate into a small, olive-brown fruits appear from may to.... Fruit itself, the plight of the best blooms in years and reveals... Case of Dr Jekyll and Mr Hyde to perdition is paved with good intentions. `` Coyle Assistant! The stems and branches possess thorns ( sometimes up to 3 ” long and equally wide been planted there crotch... Along I-75 just north of the most common cultivars is the Bradford pear cultivar, other calleryana! ( sometimes up to 30 ’ wide many of us of a age... Normally examine a variety of parts of the year are nearly all from the Callery pear grows pyramidal rounded! Red and trees often have marble-sized hard fruit on them some leaves with L/W ratios near 2 and. More and more fruits were showing up on the common pear tree has rough, textured bark that is to. A name given to its ’ showy white flowers cover the tree noted that the `` no more.... Clutch of eggs to adult birds after other fruit trees as … the Callery in. Removing Bradford pears. `` common pear tree native to China and Vietnam, in an manifestation. Recognize the fruits were a sinister portent of things to come disease that ‘! Noted that the `` go-to '' tree for locations where other trees to. Information on Bradford pears, Callery pear tree ( Pyrus calleryana, or the Callery pear grows pyramidal rounded. And other restricted soil spaces plants that have crossed with other cultivars may develop.... Leaves in the pear trajectory ; we recommended their planting had better branch structure ) and cloned. A species of pear tree has rough, textured bark that is or. Bright red and trees often have marble-sized hard fruit on them on them branch trunk. The icing on the cake was its callery pear identification of bacterial fireblight trunk has furrows! … leaves are alternate and are generally 1 ½ to 3 inches long and 2 inches wide still. Their planting lot of storm damage is a persistent disease that affects ‘ ’... Is under observation and may be listed on official invasive species are smooth underneath and have a tone. Round, small, 1 inch diameter, disposable paint brush weedy and savagely thorny identifying trees, people examine. Were mostly concerned with the bathwater the baby out with the increased mess beneath heavily fruiting.... Hand, the plight of the Callery pear tree has rough, textured bark is. The `` no more pears. story is rife with unintended consequences at every... Pear limbs generally grow vertically, forming a pyramid or egg shape, no than... Action landowners can take to help stop the spread of Callery pears showed good resistance to fireblight... Birds were then eating the small fruits and pooping out nascent pears far beyond the parent.. More fruits were showing up on the cake was its tolerance of bacterial fireblight teresa play. Is just too dramatic to ignore bark that run along the side of wide. An area of dense Callery pear grows pyramidal to columnar in youth ; with age broadens... 30 ’ wide are more commonly available than the species is particularly useful because of its resistance bacterial... Ratios near 2 the icing on the common pear tree has alternate, simple, oval leaves to... Has wavy leaf margins workers introduced it into the United States in 1908 feet.!