CAST, formerly the California Spring Trials is set to return in 2021, only this time it will be officially known as the California Summer Trials. Scheduled dates for the new summer trade event are Wednesday, June 23 through Sunday, June 27, 2021. Seeking to help stimulate the attendance of brokers, growers, and retailers, the change in date was a direct response to requests from the broker community. Many brokerage companies felt that a June event more aligned with their schedules to travel away from their regions to learn about the new plants and cultivation/sales programs. Previous spring dates were the busiest time of the year for their customers, both growers and retailers. The later date also helps in securing the event as the longer it is delayed, the better likelihood it will not be cancelled due to COVID-19.

The early summer dates also allow for a larger diversity of crops, such as perennials and heat-loving annuals, to be shown under more normal growing climates. Another major benefit to brokers is that the later calendar occurrence will allow breeders to present fully completed programs immediately before their extensive summer travels begin, rather than in the middle of a previous season. Breeding companies currently set to participate in the new CAST next year include: Ball FloraPlant, Beekenkamp, Danziger, Darwin Perennials, Dümmen Orange, Green Fuse Botanicals, Hem Genetics, Kieft Seed, Monrovia, PAC Elsner, Pacific Plug & Liner, PanAmerican Seed, PlantHaven International, Prudac, Royal van Zanten, Schoneveld, Selecta One, Suncrest Nursery (exhibiting Cohen, Hishtil, Jaldety, Kamel and Nir nurseries), Suntory Flowers, Syngenta, Takii, ThinkPlants, Vivero Internacional and Westhoff.