1 Package of 15 Seeds
- A rare hybrid between Washingtonia robusta and Washingtonia filifera, the name of this palm has been coined as a combination of the two specific names.
- While it looks much like Washingtonia robusta and grows as fast as that species, it appears to be as cold hardy as the slower Washingtonia filifera.
Germinate in vitro in gelatin, agar or other medium. Pre-soak seeds for 3 days in warm water and sow in containers. Germination takes 2 to 4 months.