Many homeowners have been startled this spring by strange growths on juniper trees, sprouting orange tentacles like miniature sea anemones. The orange growths are nothing new, according to Sharon ...

While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell. In what looked like a dendrological case of frostbite, ...

Some of us are starting to notice yellow-orange spots on the leaves of their ornamental or fruiting pear trees. These spots begin in the late spring on the upper surface of leaves, approximately 1/8 ...

Question: You recommended a fungicide for an orange rust control on plumeria. The rust fungus seems like a natural occurrence, especially as the leaves decline in the fall. I have developed the ...

Question for Dan Gill: I have an orange tree that produced abundantly this year, but I did not water it during this past very hot summer. The skin on the oranges was very dark brown, but the oranges ...

White pine blister rust breaks through a twig in orange blisters as shown in this photo. The non-native rust will eventually kill the infected tree. (Contributed photo by Anna Schoettle) A healthy ...