Growing washingtonia palms is relatively easy, as long as you are planting in the right conditions. Although those palm trees are native to the desert, they grow naturally in pockets of underground water and are only somewhat drought tolerant. They like full sun to partial shade and well draining sand to loam type soil. They can tolerate both slightly alkaline and slightly acidic soil. They grow at a rate of at least 1 m per year. Once they reach about 9 m in height, they often begin to naturally drop their dead leaves, meaning it is not necessary to prune away old growth.
Technical specification
Watering: Almost dry out between watering.
Ambient: Outdoor plant
Temperature: Full sun
Fertilizer: Universal fertilizer, granular or pellet