Control Bagworms With Insecticides in June and July
go.ncsu.edu/readext?749880
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 ▲Bagworms look exactly like they sound. They spend much of their life as worms living in bags. They are common throughout North Carolina and seem to prefer juniper and arborvitae as their home, although they can be found on other shrubs and trees.
Bagworms hatch in May and June and travel from one plant to the other by silk threads and wind. They will attach themselves to the stem of a shrub and begin to spin a bag using parts of the plant for re-enforcement. They also begin to eat foliage and can defoliate a plant when large numbers are present.
Bagworms are not particularly noticeable until numerous bags are seen hanging on a shrub. These bags can best be seen in the winter when leaves of deciduous trees are absent. In the early summer these bags will move when prodded, telling the observer that the eggs are about to hatch from the bag. Female bagworms never leave the bag, but in August the male bagworm emerges from the bag as a moth and mates with the female in her bag.
Effective contol with insecticides must take place during June and July while the bagworm is actively feeding and spinning it’s bag. Once the bag is spun and the worm is enclosed, chemicals cannot penetrate. When this has taken place, the only effective control is to cut the bags off the branches of the shrubs with scissors and then destroy the bags.
Bagworms are unsitely when large numbers are present and girdling of the stem by silk threads used to attach the bag to the shrub can cause damage. The occasional bagworm is not a threat to a shrub so the homeowner must make the decision as to whether the infestation is severe enough to warrant chemical control.
Applications of liquid Sevin, insecticidal soap or spinosid are effective when applied at the proper time. At least two applications will be necessary at seven to ten day intervals. Follow the label recommendations for application rates and safe procedures.
Get out in your landscape now and inspect trees and shrubs for these hanging bags full of worms.