Well, there are a few magnificent trees in the background, but I'm guessing that the attractive silvery-blue, mounded foliage of the Cussonia paniculata, or Mountain Cabbage Tree, in the far right of the photo has caught your eye. This plant is a real showstopper, with gorgeous coloring, intricate foliage, and an intriguing shape. Here's a link to an article with great information about the species:

http://www.plantzafrica.com/plantcd/cussoniapan.htm

This is just one example of the rare and fascinating horticultural specimens that we offer in our Richmond nursery. Stop by and take a look if you're located in the San Francisco Bay Area!