Tree Blog

Quercus kelloggii | Occidental

This photo gives a look inside the structure of an ancient Black Oak. Q. kelloggii is quite exacting in its soil and climate needs. It is very rare indeed to find Black Oaks growing in valley soils. The Dish at Stanford provides a perfect example. Old Black Oaks can be found from the crest of the Santa Cruz Mountains down to the edge of the Stanford campus. But decades of searching have revealed no Black Oak on the Dish itself, yet going only a few miles toward the to top of the mountains, Black Oak becomes common. 

Dave Muffly