Recommended Landscape Designers in LA?

Q- My husband and I are about to move to our new home, and our first project is going to be a major backyard renovation.  We hope to turn a boring expanse sod into a beautiful outdoor room where we can spend lots of our time.  We have lots of ideas (drought-tolerant, sculptural plants, a vegetable and herb garden, a BBQ and dining area) but we want to get a professional involved to collaborate with us to design it.  It would be so helpful if Apartment Therapy (and AT readers) could help us compile a list of recommended landscape designers in the LA area. Thanks in advance! Anna