news — Gymnosporangium juniperi-virginianae
Cedar Apple Rust On Juniper Bonsai
Posted by Andrew Youtz on
Cedar Apple Rust is caused by Gymnosporangium juniperi-virginianae, a plant pathogen/fungus that primarily effects apple and juniper related species. This is a pretty interesting fungal disease that I have have been battling since getting into bonsai. Early in my bonsai experience my love for junipers is what first exposed me to cedar apple rust. I commonly purchased San Jose, Hollywood and other garden variety junipers from random local nurseries. Many of these I found were very susceptible to cedar apple rust. Cedar apple rust has a pretty interesting 2 year life cycle. One year apples and crab apples carry it. The apple trees then release spores...