More Plant Breeders Coming to California Spring Trials
November 4, 2025 
Agastache ‘Meant to Bee Queen Nectarine’ (Walters Gardens)
The National Garden Bureau, which took over managing registration for California Spring Trials (CAST) this past year, continues to announce new participants and new locations for some breeding companies for CAST 2026.
We’ve already posted about Benary moving its CAST experiences from its Watsonville facility to Por La Mar Nursery in Santa Barbara, and Israeli growers, exhibiting as Global Plant Source, relocating to the Santa Barbara Polo Club. This past week, two more announcements were made, both highlighting new CAST companies.
Walters Gardens will have a plant display at the Santa Barbara Polo Club, joining Global Plant Source as well as current exhibitors Suntory Flowers, Plant Development Services, Pacific Plug & Liner, and PlantHaven.
Another new participant, Express Seed Company, is joining Danziger and ThinkPlants at the Headstart Nursery location in Gilroy, CA.
The dates for the 2026 event are March 24-27, 2026 (Tuesday-Friday). Until registration opens (no later than January 2, 2026), attendees can begin planning their schedules now by using the trip planner found at https://caspringtrials.us/trip-planner.
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