Cedar Apple Rust

Forest Pests — The golfball-size galls that form on eastern redcedar (alternate host) are unsightly, but cause little harm to the tree. The primary hosts-apples-experience foliage loss, growth loss, reduced quantity and quality of fruit, and, in some cases, ...More…

Cedar Apple Rust

NY State IPM — Cedar apple rust (CAR) is an important fungal disease of apple in North America east of the Rocky Mountains. It can defoliate trees and blemish fruit making them unmarketable. The CAR fungus requires two hosts, apple and eastern red cedar ...More…

Cedar Apple Rust

University of Saskatchewan — Kabaluk was a graduate student with the Department of Horticulture Science. This column is provided as an extension service by the Division of Extension and Community Relations and the Department of Horticulture Science, University of ...More…

Cedar Apple Rust

University of Illinois Extension — Cedar apple rust is caused by a fungal pathogen called Gymnosporangium juniperi-virginianae. This fungus attacks crabapples and apples (Malus sp.) and eastern red cedar (Juniper) as well as a few other junipers not commonly grown in Illinois. In ...More…