Trying To Figure Out If My Palms Are Mexican Fan Palms Or California Fan Palms ?

Question

I live just to the West of Phoenix Arizona where it is very dry and very hot in the Summer and I am trying to figure out if my Palm Trees are Mexican Fan Palms or California Palms ??? Also I am trying to figure out how much I should be watering them ???

• 
• 
• 
• 

Answer 1

Palms are very difficult to distinguish, but the shape of the trunk paired with the leaf arrangement leads me to believe that it is Washingtonia robusta or the Mexican Fan Palm.

Here is an article that will help:

https://www.gardeningknowhow.com/houseplants/fan-palm/growing-mexican-fan-palms.htm