Humic acid is a principal component of humic substances, which are the major organic constituents of soil (humus), peat, coal, many upland streams, dystrophic lakes, and ocean water.t is produced by biodegradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid.
Noteworthy Characteristics. Picea abies, commonly called Norway spruce, is a large pyramidal evergreen conifer that is native to the mountains of northern and central Europe east to the Urals. In its native European habitat, it typically matures to 100-150' (occasionally to 200') tall.
There are 35 species of spruce trees, with Colorado blue spruce one of the most popular, according to the Arbor Day Foundation. It grows to 50 to 75 feet in height and has that familiar Christmas tree shape. Spruce trees should be planted in full sun in USDA zones 2 to 8. One of the easiest ways to grow spruce trees is from seed.