Phenology Graphs for the arrival dates of swallows, leafing dates of oaks and the flowering of herbs, apple and mustard, provided by the Institute of Terrestrial Ecology.
Phenology Model Database Contains descriptive information about the phenologies of plants, pests, and beneficials, mostly focusing on those that are important in California agriculture.
Phenology Web Links Directory of information and websites providing floral calendars and sequence of bloom.