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.
Use a fast-draining, sterile, commercial potting soil mix. Norfolk Island Pines as Christmas Trees If you should decide to decorate and use your Norfolk Pine as a living Christmas tree, be sure that the soil is kept sufficiently moist during that time when it is decorated. Electric Lights have a severe drying effect on plants. Be sure to mist your tree daily, or provide other sources of additional humidity.