Tom Gillan is the owner of Native Nursery. He's also in the midst of writing a book titled Gardening on the Side. It's not about gardening as a hobby, it's about planning and planting specific to the side of the building.
For example, here on the high plains, any planting done on the west side of a structure needs to keep in mind all weather conditions plus the reflection of the hot sun off the sides of the building as well as window. Those circumstances require careful planting.
Native Nursery is located at 17025 S. Golden Rd. in Golden, Colorado. The toll free number is: 1-888-278-3750.