Evergreen Oaks: Hearty Trees for the South
go.ncsu.edu/readext?232327
en Español / em Português
El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.
Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.
Português
Inglês é o idioma de controle desta página. Na medida que haja algum conflito entre o texto original em Inglês e a tradução, o Inglês prevalece.
Ao clicar no link de tradução, um serviço gratuito de tradução será ativado para converter a página para o Português. Como em qualquer tradução pela internet, a conversão não é sensivel ao contexto e pode não ocorrer a tradução para o significado orginal. O serviço de Extensão da Carolina do Norte (NC State Extension) não garante a exatidão do texto traduzido. Por favor, observe que algumas funções ou serviços podem não funcionar como esperado após a tradução.
English
English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.
Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.
Collapse ▲
Q. virginiana
JC Raulston Arboretum ©
Evergreen oaks in North Carolina were traditionally almost entirely used in the coastal plain, lower piedmont and Sandhills. Although typically described as being adapted to USDA hardiness zones 6 through 9, their performance and growth rate is by far better in warmer climates. One way to interpret the effects of hardiness zones on evergreen oak performance is to observe the height and width range of various species in addition to growth rates. Outside of a species’ optimum climate and hardiness zone, expect the lesser size and growth rate.
The smallest of the evergreen oaks is the Japanese oak (Quercus acuta), which ranges from 20 to 30 feet tall and 15 to 20 feet wide. Our largest evergreen oak is the native live oak (Quercus virginiana), ranging from 40 to 80 feet high and spreading 60 to 100 feet wide. In between these two species are the blue Japanese oak or ring-cupped oak (Quercus glauca), Chinese oak (Quercus myrsinifolia), ubame or ubamegashi oak (Quercus phillyraeoides), Monterrey oak (Quercus polymorpha), and the Mexican oak (Quercus rysophylla).
Q. phillyraeoides
JC Raulston Arboretum©
A variant of the ubame oak has been assigned the cultivar name ‘Emerald Sentinel.’ Michael Dirr favors this one for its hardiness and offers these comments: “Introduced by the JC Raulston Arboretum in North Carolina for its upright habit, fast growth, showy catkins, and ease of rooting.” The leaves are quite handsome because the new growth emerges as a bronze red color. It demonstrates excellent tolerance to heat and drought.
Evergreen oaks, especially the small ones, have potential for greater use in the landscape as specimen trees, screens and windbreaks. Wildlife observers will enjoy their presence as habitats for turkey, deer, ducks, quail and song birds. Expect some minor but not life-threatening problems from pests. As with many oaks, expect to see leaf spots, galls, scale, cankers, caterpillars and possibly mistletoe. In areas with snow and ice accumulations, you may see excess limb breakage because of heavy foliage.
Visit the JC Raulston Arboretum to see a variety of evergreen oak species.