[One more pause like that, missy and he's going to have to take that shovel from you :|] Yup! I'm a florist where I come from so plant care's part of my job.
[He scrutinizes the hole she was working on, then looks at the tree in the bag, the approximates a size with his hands --] It's better if you dig a hole that will cover the soil that surrounds the roots of your tree, and give you space for some fertilizer to nourish the plant.
[He crouches right beside her sapling and approximates with his fingers how deep and wide around it.] Not more than two inches from the root tops because you'd need it to be shallow enough to water easily as it grows; and no more than an inch-and-a-half around.
[Her dedication makes him smile.] So you really wanna do this on your own, huh? The tree's a smart choice -- they practically last forever, and -- [Wait. He nods towards the plaque nearby, voice less jaunty.] So... that would explain the plaque, huh?