 Re: What do you think of this pruning?
Some trees that are ring porous are Elms, Oaks, and Ash. These trees display wide ring increments in the spring wood xylem, and narrower ring growth in the later season growth.
It is a biological issue that is related to the density of the cells at the time of growth, the later developed wood (xylem) is composed of cells that are smaller in diameter
Alternately, trees like Poplar, Maples and Planetrees are considered diffuse porous, and may be identified by uniform ring growth in the xylem. |