Trees often decline for apparently no clear reason. However, [...]
The forecast for the next few weeks is cold – the first severe cold temperatures we have seen in western Oregon this winter. It may be a good time to review how plants are damaged by freezing weather.
Plants require soils that allow their roots to exchange oxygen with the soil, soils in which their roots can expand and grow, and that have adequate moisture retention capability. Trees surrounded by paving have limitations to all these necessary conditions.
The practice of making a planting hole with an auger [...]