Bloom categories are as follows: Early Spring, Mid-Spring, Late Spring, Early Summer, Mid-Summer, Late Summer,Early Fall, Mid-Fall, Late Fall,Early Winter, Mid-Winter, andLate Winter. Actual bloom times can vary depending on your zone and seasonal conditions. Many plants continue to bloom sporadically throughout the season. If a plant is listed in this bloom season, it is reasonable to expect blooms during that time. The plant may also bloom in other seasons as well.