This is the second in a three part series by special guest author Dr. Alex L. Shigo, retired chief scientist of the U.S. Forest Service and author of numerous books including Modern Arboriculture. Understanding trees and how to plant them, and planting the right tree in the right place are essential for tree planting success. Here Dr. Shigo introduces some key "tree basics."
Some Tree Basics
Trees are plants that are:
- perennial--live for several to many years
- woody--have tough cell walls of wood
- shedding--use and shed woody and non-woody parts
- compartmented--made up of many compartments.
Trees usually have a single stem over three yards (meters) tall.
Shrubs usually have many stems less than three yards (meters) tall.