Homer Louis "Boots" Randolph IIIwas an American musician best known for his 1963 saxophone hit "Yakety Sax". Randolph was a major part of the "Nashville Sound" for most of his professional career... (wikipedia)
I think David and Sam just fed these trees and shrubs and tended them very well. They probably get twice as much growth out of a plant because of their care philosophy.
The biggest challenge is that Sam and Dave are perfectionists. Really trying to satisfy their expectations was fun. They were just as excited as we were about the project.
It takes the tree at least one season to settle in and get growing again, but with Dave and Sam's care, they grow faster.
If you are planning a garden and decide you need help, this is a great time to talk to landscape designers or contractors and start the process. They aren't as busy as they will be when the grass turns green.
If you put in a tree with a 4-inch-diameter trunk, you have an instant tree.