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.
i planted a few thousand white pines in north missouri for windbreaks over a 5 year span for the first 3 or 4 years about all they do is survive than they take off i planted the trees about 6 apart in the row while the rows were far enough apart that i could mow with the tractor think 10 at the end of 10 years i would think you will have an attractive tree line maybe 6 to 15 feet tall your borderline late on getting them in the ground a hot and dry spell can do them in