Cornell Cooperative Extension will hold a Urban Tree Pests and Diseases webinar on June 11th from 1 to 2:15 p.m. (EDT).
Extension Entomologist Dan Gilrein will cover the latest on important invasive pest threats -emerald ash borer, which is now killing trees around Long Island, and spotted lanternfly, which is expected to arrive in the near future to help in early recognition and management.
This presentation will also review some of the other troublesome tree pests including fall webworm that was in outbreak status the last two years, and eastern tent caterpillar which also appears at high levels periodically. Arborvitae leafminer, oak shothole miner, bagworm and several others of recent importance will be mentioned, including some management suggestions.
Trees in the urban landscape are beset with all sorts of contagious disease threats, in addition to having many “people pressure diseases”. Margery Daughtrey, Cornell Extension biologist will cover anthracnoses and other leaf diseases including rusts, cankers, galls, root rots and vascular wilts that are commonly seen on Long Island, and also describe the new beech leaf disease (caused by a nematode!). You’ll learn how to recognize these plant problems and how to minimize their effects culturally.
To register for this webinar, go to http://ccenassau.org/events/2020/06/11/online-urban-tree-pests-and-diseases