Brad Withrow-Robinson, OSU Forestry & Natural Resources Extension agent for Benton, Linn and Polk Counties
In this series about young stand thinning , I’ve worked on the assumption that people know the density of trees in their woods. I realize that in many cases, people don’t really know that, so cannot easily apply that information to deciding if they have enough room for healthy growth or if trees need to be thinned.
If you know what distance the trees were said to have been planted, you may have a fair idea of the density (a 10’ x 10’ spacing is about 440 trees per acre, a 12’ x 12’ is about 300 tpa). This is a good start, but not necessarily very accurate. Actual planting spacing can vary quite a bit according to the conditions in the field and experience of the planters. And of course some seedlings die during establishment, or some other trees may seed in from outside. So it is probably a good idea to go out and get a better idea of what you’ve got. The basic way to do this is to measure some plots. Continue reading