— Written By Thomas Glasgow and last updated by Jami Hooperen Español / em Português
Español
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 ▲
Yes, this is Photinia x fraseri, known as “red-tips” in olden times. In the first image, it’s easy to see the attraction to this large, fast-growing shrub. For many years it was the go-to selection for privacy screens throughout the southeastern U.S., to the point that Michael Dirr (Manual of Woody Landscape Plants, 5th-edition, 1998), opined “This plant is so overused that the term nauseous is not sufficiently applicable”. However, nausea was only a secondary issue. The problem that essentially took red tips off the market was the fungal disease known as Entomosporium leaf spot, caused by the fungal pathogen Diplocarpon mespili (conidial state is Entomosporium mespili).
In the second image, we see a very moderate degree of spotting, just as the growing season is getting started (both images were taken on April 19 in New Bern). As the season wears on, or as the years go by on an infected privacy screen, the spotting becomes more and more severe, to the point of significant defoliation of the plants. In 2020, there are still some individual plants and even small groups of red tips that look pretty good, and there’s no need to remove these survivors. But bear in mind that Diplocarpon mespili is a very aggressive pathogen, and spray programs just don’t make sense, especially on shrubs of that size.
Why does this matter in 2020? The significance these days is that Indian hawthorn (Rhaphiolepis indica) is also susceptible to Entomosporium leaf spot, and we’re still planting lots of Indian hawthorn. Management involves several steps, the most important being cultivar selection. Clemson University provides a very helpful information note on Indian hawthorn, including a listing of various cultivars and their relative susceptibility. In addition to careful cultivar selection, be sure to plant Indian hawthorn in sunny locations, and with good spacing in between individual plants. This will help to reduce the periods of leaf wetness. Avoid overhead irrigation for the same reason. For more information, access the Clemson note.
Attractive new growth and flowers of Photinia x fraseri.
