What is the phenology of rust?
Phenology is the study of the timing of natural cycles and how they relate to each other. In this case, we’re interested relating the developmental stages of rust (such as the emergence of pustules) with behaviors of plants such as bloom times or leaf emergence. An excellent example and explanation of phenology is at the Daylily Spring Sickness Phenology Page. To the best of my knowledge, phenological information on this rust has been essentially undocumented in the USA, and never assembled. Because of the huge range of climates, phenology might require very different indicators in different regions. This would be a nice project for somebody, and the results could be placed in this FAQ.
