Rust: Rust are fungi from the Uredinales order. The majority of these species are plant parasites. Most of the rust have two or more host and possibly up to five spore stages. These type of fungi reproduce asexually. They travel by air causing foliar problems for several types of plant material. Rust can attack many varieties of plants but only one kind of rust can infect a plant at a time. Rust appears as orange-red spots becoming dark with time. Some diseases/fungus will become more active with the presence of excess fertilization as well as unpredictable weather conditions.
