Engelman Spruce from Utah

by Andrea Butje on June 24, 2011

There are only a few conifer (Pine, Spruce or Fir) oils that contain a significant percentage of d-limonene. Siberian Fir, Silver Fir and Engelman Spruce are three that generally have at least 25% d-limonene. Why do you care about d-limonene? Well maybe you don’t yet, but check this out . . . The immune stimulating […]