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Selected at the U of WI this handsome 30-40' x 20' tree offers chalk white bark glossy dark green fine textured foliage tolerant of high temps AND resistance to … Whitespire was first considered a cultivar of the Japanese Asian White Birch (Betula platyphylla japonica). Send by email Printer-friendly version. japonica when introduced into commerce in 1983, but that designation was subsequently changed when it was determined 'Whitespire' was in fact a gray birch. It also tolerates poor soils. Watch for leaf spot problems. 'Whitespire' reportedly has some resistance to the borer. Shiny 1.5"- 3" long 2"-3" wide, alternate, simple leaves ovate to triangular-ovate, unequally serrate to doubly serrate. Ovate nuts, 1.2-2.2 mm long, puberulous, wings 1.5-2 times wider, ripen fall-spring. It most often appears in a multi-trunked form, but also grows with a single trunk. Smooth, non-peeling, chalky white bark even through maturity someitmes with a tinge of pink marked with black triangles. Betula platyphylla 'Whitespire' Edward Hasselkus A narrow, pyramidal white-barked birch that is tolerant of high temperatures and re-sistant to the bronze birch borer was regis-tered and introduced last year by the author at the University of Wisconsin- Madison. This species of birch grows poorly and is generally short-lived in the St. Louis climate. It will self-seed and form an attractive stand of trees. Green female catkins are conelike 1/2" long, with 3-lobed scales. However, it does not tolerate dry soils and has shallow roots. Description: A wonderful birch tree selection with snowy white bark and good fall color; higher resistance to the dreaded bronze birch borer than most other white-barked birches make this a preferred variety for home landscape use. The plant performs best in cool northern climates where summer temperatures rarely exceed 75 degrees F. and where shallow root systems are generally covered with snow throughout the winter. It is now assigned to Betula populifolia and the plants are often sold under the name 'Whitespire Senior' to avoid confusion. 'Whitespire' was originally named as a cultivar of Betula platyphylla var. Betula populifolia, commonly called gray birch, is a short-lived, narrow-columnar, suckering, deciduous tree that typically grows to 20-40 tall. This white birch was selected at the Arboretum of the University of Wisconsin in Madison because it showed more Bronze Birch Borer resistance than most other white barked birches. NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to Whitespire was first considered a cultivar of the Japanese Asian White Birch (Betula platyphylla japonica). Specific epithet come from the Latin populus meaning poplar genus and folia meaning leaves like those of the poplar.Species name comes from Populus (poplar genus) and Latin folia (leaf) in reference to leaf appearance. Betula is Latin for birch and describes a genus of about 60 species of deciduous trees and shrubs found in many gardens and landscapes throughout the northern hemisphere. Do not prune in winter or spring when the sap is running because it will bleed. Female flowers are followed by drooping cone-like fruits containing numerous small winged seeds that typically mature in late summer. Vegetatively propagated plants of this cultivar are considered to have better resistance to bronze birch borer than seed propagated plants, resulting in the use of the cultivar name 'Whitespire Senior' by some nurseries as a way of designating those plants which have been vegetatively propagated. It is native primarily from Southeastern Canada to Virginia, with a scattering of plants extending westward to Illinois. 10 Search Results. The species is noted for its non-peeling chalky white bark and its long-pointed triangular green leaves. Tiny monoecious flowers appear in early spring in separate catkins on the same tree: yellowish-brown male flowers in single catkins (to 4” long) at the branch tips and greenish female flowers in smaller, upright catkins (to 1/2” long). This plant is a cultivar of a species that is native to the Chicago region according to Swink and Wilhelm's Plants of the Chicago Region, with … Betula platyphylla var. It typically occurs in both dry and wet soils. Whitespire Senior Birch has dark green foliage throughout the season. Birches are considered a "pioneer" species and, thus, tends to grow quickly when young. Although this gray birch has some susceptibility to aphids, birch skeletonizer and dieback, these problems are usually considered to be somewhat minor in comparison to the birch borer and birch leaf miner. Other Names: Betula platyphylla. Keep the root zones cool and moist and consider using soaker hoses and bark mulches. Whitespire Birch (Betula populifolia 'Whitespire') in Inver Grove Heights, Minnesota (MN) at Gertens. Other Names: Betula platyphylla. 'Whitespire' is best known for its upright form, non-exfoliating white bark, dark green leaves and attractive yellow fall color. It is not recommended for planting south of USDA Zone 7. It seems to tolerate drier soils in its native range. Description: Attractive gray-white bark with black markings, doesn't exfoliate; glossy green leaves and lovely fall color, moderate resistance to bronze birch borer; a clonally-propagated version of 'Whitespire' birch. Wholesale; Nursery Name City State / Province ; Bachman's Wholesale Nursery & Hardscapes: Farmington : Minnesota : Bachman's Wholesale Nursery & Hardscapes. This plant has many benefits including ease of transplant, that it casts light shade, and tolerates heat, wind, deer, and drought. Weakened birches become very vulnerable to the bronze birch borer which, in the St. Louis area, typically infects and kills trees that are stressed by summer heat and humidity. Plants stressed by insects seem more susceptible to cankers. long-pointed triangular green leaves. japonica when introduced into commerce in 1983, but that designation was subsequently changed when it was determined 'Whitespire' was in fact a gray birch. This tree is noted for (1) its non-peeling chalky white bark with dark chevron trunk patches appearing below each branch base and (… Vegetatively propagated plants of this cultivar are considered to have better resistance to bronze birch borer than seed propagated plants, resulting in the use of the cultivar name 'Whitespire Senior' by some nurseries as a way of designating those plants which have been vegetatively propagated. Non-showy flowers, unisexual, catkins. Betula. Yellow-brown male catkins appear in fall, remaining on tree through winter and opening in spring. Consider using soaker hoses and bark mulches to keep the root zones cool and moist. Betula platyphylla 'Whitespire' Scientific Name: Betula L. (Betulaceae) platyphylla Sukachev. japonica when introduced into commerce in 1983, but that designation was subsequently changed when it was determined 'Whitespire' was in fact a gray birch. Native to (or naturalized in) Oregon: No. In optimum growing conditions, plants will easily spread by suckers. This tree reportedly has some resistance to the borer. Plants have rough-warty twigs.Genus name is the Latin name for birch. In optimum growing conditions, plants will easily spread by suckers. Originally thought to be Betula platyphylla japonica, Whitespire has recently been identified as Betula populifolia, Gray Birch, a species known to be bronze birch borer resistant. Fall color is usually undistinguished. It seems to tolerate drier soils in its native range. Unlike many varieties of Birch, the Japanese Gray Birch is somewhat resistant to bronze birch borer. Birch leaf miner may also cause significant problems. Menu. 'Whitespire' was originally named as a cultivar of Betula platyphylla var. Read our Commitment to Diversity | Read our Privacy Statement. Japanese Gray Birch grows best in medium to wet, well-drained, sandy or rocky loams in full sun to part shade. Japanese Gray Birch grows best in medium to wet, well-drained, sandy or rocky loams in full sun to part shade. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. This tree is noted for (1) its non-peeling chalky white bark with dark chevron trunk patches appearing below each branch base and (2) its long-pointed triangular green leaves. Betula is Latin for birch and describes a genus of about 60 species of deciduous trees and shrubs found in many gardens and landscapes throughout the northern hemisphere. Leaves are glossy, dark green turning yellowish-green in fall. It typically occurs in both dry and wet soils. In the St. Louis area, it is best sited in a northern or eastern exposure that receives some afternoon shade. Type: Broadleaf. Includes Betula nigra 'BNMTF' Dura Heat™, Betula nigra 'Cully' Heritage™, Betula papyrifera - Paper Birch, Betula pendula 'Dalecarlica' - Cut-leaf Birch, Betula pendula 'Fastigiata', Betula pendula - Silver Birch, Betula platyphylla 'Fargo' Dakota Pinnacle™, Betula platyphylla var. N.C. Tiny monoecious flowers appear in early spring in separate catkins on the same tree: yellowish-brown male flowers in single catkins (to 4” long) at the branch tips and greenish female flowers in smaller, upright catkins (to 1/2” long). It needs little pruning, but if necessary, prune during the dormant season. japonica ‘Whitespire’. It also tolerates poor soils. Betula platyphylla var. The species, Betula populifolia, or gray birch, is a short-lived, narrow-columnar, suckering, deciduous tree that typically grows to 20-40’ tall. Triangular leaves (each to 3” long) are double-toothed and shiny with tapered tips. BETULA POPULIFOLIA 'WHITESPIRE' Whitespire has a beautiful spire-like upright form, white non-exfoliating bark and excellent bronze birch borer resistance. The cultivar, 'Whitespire', is best known for its upright form, non-exfoliating white bark, dark green leaves and attractive yellow fall color. In cool northern climates, this gray birch may naturalize by self-seeding and root suckers to form attractive strands. Synonyms: formerly B. platyphylla var. This cultivar demonstrates good resistance to bronze birch borer (BBB). It needs little pruning, but if necessary, you can prune during the dormant season. Not recommended for the St. Louis climate. Avoid pruning in spring when the sap is running. long (7 cm), with some golden-yellow fall color before they shed for the winter. Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours). Performs best in cool northern climates where summer temperatures rarely exceed 75 degrees F. and where shallow root systems are generally covered with snow throughout the winter. form a strategic partnership called N.C. Cooperative Extension prohibits discrimination and harassment on the basis of race, color, national origin, age, sex (including pregnancy), disability, religion, sexual orientation, gender identity, and veteran status. japonica , or Japanese White Birch, is a cultivar of Betula platyphylla with a pyramidal form, white bark that does not exfoliate, a central leader and thin, spreading, slightly pendant branches. The name 'Whitespire' was incorrectly assigned to Betula platyphylla . However, it is susceptible to leaf miner. 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