Here is the blog of Doug Kalal from Great Gardens Landscape Design. Use the search box to find lots of great ideas for your landscape.
What are the names of the taller skinny palms?
Those are Queen Palms.
Can you top off a queen palm?
Yes but they die
Are the pygmy date palms (Robelenii) Arizona grown or are they shipped in from Florida.
This was a San Diego Costco, so there were probably grown in the massive nursery grounds in North San Diego county