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.
1 Be sure to insert the propagation into the potting mix right side up, with the segment which was on the bottom on the original plant into the mix. 2  A cutting inserted upside down may not take root. 3  Start Christmas cactus propagations in early spring for use as holiday gifts.