Juniper: Pear trellis rust categories: Conifers Juniper Juniper Diseases Ornamentals revision date: 2023-02-07 12:00 Symptoms on Juniperus sp.Photo by: P. Kapitola, Bugwood.org Biology Pear trellis rust is a fungal disease that attacks pear trees and junipers. It is commonly reported on pear leaves in western Washington. Like many rust diseases, pear trellis rust requires both […]
Juniper: Phomopsis twig blight categories: Conifers Juniper Juniper Diseases Ornamentals revision date: 2023-02-07 12:00 Phomopsis twig blight on juniperPhoto by: R.S. Byther Biology Infection by Phomopsis begins with young leaves at the tips of shoots and can occur any time tender young foliage is available. Initially, small yellow spots appear on the scale-like leaves. As […]
Juniper: Phytophthora root rot categories: Conifers Juniper Juniper Diseases Ornamentals revision date: 2023-02-07 12:00 Phytophthora root rot on juniperPhoto by: R.S. Byther Biology Phytophthora root rot is usually a problem only in areas with poor drainage or where flooding occurs. The fungus attacks the roots, which rot and die. The infection moves up into the […]
Juniper: Rust categories: Conifers Juniper Juniper Diseases Ornamentals revision date: 2023-02-07 12:00 Juniper rustPhoto by: R.S. Byther Biology Several types of rusts infect junipers. The alternate hosts for most of the rusts are in the rose family, including plants such as hawthorn, cotoneaster, and apple. Infected junipers develop round or elongate galls on the branches. […]