I planted a columnar English oak (Quercus robur ‘Fastigiata ... which encourages root grafting between oak trees that aren't necessarily even the same species. Let them function as a ...

In Colorado, these varieties have shown to lose their lower branching over time, resulting in dead-spots on the tree,' Carolin notes. Known to have a 700 year life span, the columnar oak comes in ...

Thinking about oak trees brought to mind a nursery catalog I got that sells columnar oak trees. Normally oak trees get big, but there are several varieties of much smaller columnar-shaped oaks ...