Wednesday, February 26, 2014
cedar apple rust
Milford, MA // Cedar-Apple Rust (Gymnosporangium juniperi-virginianae) is a fungus that infects the Eastern Red Cedar (Juniperus virginiana, not actually a cedar) wherever there are apples or crabapples in the same range. The fungus cycles between Juniperus and apple trees from season to season, and the galls on Juniperus are very distinctive in my neighborhood once they mature. The orange spore horns become bigger in the rain and will shrivel and swell with the weather, and some of them get so big they would fill the palm of my hand. If you were wondering, the galls are squishy and slimy when hydrated, and they look a lot less cool once they release their spores and start to decompose.