Valley 101

What do you think of when you picture a palm tree? For some, palm trees bring to mind images of beaches, sand and the ocean waves — not the desert. But you can spot the high-rising plant pretty much anywhere you head to in town. That begs the question: Are palm trees native to Arizona? Why does Phoenix have so many? In this week's episode of Valley 101, a podcast from The Arizona Republic and azcentral.com, podcast editor Katie O'Connell digs in on this fixture of our landscape.  In this episode you'll hear:Liz Makings, collections manager for Arizona State University's HerbariumSteve Blackwell, conservation collections manager at the Desert Botanical GardenBrian Blake, owner of Whitfill Nursery: Main Tree Farm