Most everyone knows that we use proteins, carbohydrates and fats for energy. Calories are measurement of a unit of heat or food energy. For example, we can achieve four calories per gram of proteins and carbohydrates, and nine calories per gram from fats.
Tree Variety. Virginia pine (Pinus virginia) is the major Christmas tree species for the acidic soils found in East Texas. A grower can produce a 6- to 8-foot Virginia pine Christmas tree in 3 to 5 years, depending on soil and climatic conditions.
#7 Balsam fir. Balsam fir is one of the most cold hardy and aromatic of all fir trees. It grows well in the Canadian cold, but is also comfortable when planted in some parts of eastern North America.It is one of Americaâs most popular Christmas trees.Fraser fir, another important Christmas tree grown in our area is closely related to balsam fir.#6 Sugar maple.t grows well in the Canadian cold, but is also comfortable when planted in some parts of eastern North America. It is one of Americaâs most popular Christmas trees. Fraser fir, another important Christmas tree grown in our area is closely related to balsam fir. #6 Sugar maple.