Evergreen trees such as pines, spruce and cedar often are most enjoyed during the Christmas holiday season. The bright lights, shining star and wide array of ornaments adorn the tree, helping to ...

Shown here is an intimidating and odd-looking fungal growth attached to a cedar branch. It is called cedar apple rust. The airborne spores growing on the leaves and fruit of an apple tree will infect ...

Q: Are there any apples that are resistant to cedar apple rust? My existing apples are eaten up with it. Answer: This has been a particularly bad year for cedar apple rust because of all of the rain ...

This gall formed by the cedar-apple rust pathogen is exuding tentacle-shaped structures, called telial horns, which produce spores that will infect apple trees and other hosts in the rose family. The ...

ST. LOUIS — Hikers out among Missouri's trees will soon begin to notice an orange goo encroaching on trunks and even dripping from branches, according to the Missouri Department of Conservation.

Due to periods of cool, wet weather, some apple and crabapple trees are infected with apple scab or cedar apple rust disease. Early symptoms include olive, brown, yellow or orange spots on leaves.