Disease
Rhizosphaera Needle Cast |
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 Updated: 5/4/2012 |
Rhizosphaeara needle cast is one of the most common fungal diseases of Colorado blue spruce. This disease can also affect other conifers including Engelmann, black, Serbian and Sitka spruce; Austrian, mugo and eastern white pine; Douglas fir; and western hemlock. For more information click the following link: Rhizosphaera Needle Cast (.pdf, 1 page) |
General Links
UW – Plant Disease and Diagnostic Clinic
Oak Wilt (.pdf, 1 page)
Foliose Lichens (.pdf, 1 page)
Winter Salt Injury and Salt-tolerant Landscape Plants (.pdf, 12 pages)
Damping Off (.pdf, 1 page)
Rhizosphaera Needle Cast (.pdf, 1 page)
Wood Mulch and Tree Health (.pdf, 2 pages)
Apple, Crabapple, hawthorn, and juniper disorder: Cedar Rust Complex (.pdf, 4 pages)
Tubakia Leaf Spot (.pdf, 1 page)
Fir Broom Rust (.pdf, 1 page)
Downy Mildew(.pdf, 1 page)
Powdery Mildew (.pdf, 2 pages)
Diplodia Shoot Blight and Canker (.pdf, 1 page)
Conifers Disorder: Sphaeropsis Shoot Blight and Canker (.pdf, 2 pages)
Armillaria Root Disease (2 pages, .pdf)
