Host Richard Hentschel talks about foliar diseases, especially those that affect our ornamental flowering crabapples and our apple trees in the home orchard. Cedar Apple Rust requires both an evergreen and a deciduous host. Right now, the evergreen side is obvious to spot with jelly-like orange fingers on a gall, which is sending out spores to our apples and crabapples. The second disease is that of Apple Scab, which can be more damaging to the apple crop and visually on the crabapple.