Summary

Fertilization at planting with Gromax ™ teabags did not affect survival of Douglas-fir, Engelmann spruce or lodgepole pine seedlings. Fertilized seedlings were taller and had larger stem diameters in the second year after planting, but this effect had disappeared by year five. In year nine, the proportion of seedlings that had reached free growing was similar in fertilized and unfertilized treatments. Seedlings of all three species performed better on a mesic site than a mesic-subhygric site, but the trends in response to fertilization were similar on the two sites