Avocados are tropical evergreen fruits that grow well in Texas USDA Hardiness Zone 9. The fist-size fruits are well-know for their use in Tex-Mex dishes. Outside of zone 9, avocados should be grown in containers. Avacados are simple to start from the egg-size avocado pit. Like other tropical fruit trees, avocados will grow well indoors in containers. When grown outdoors in rich soil, avocado trees may reach heights of 60 feet.
Wash and scrub the avacado pit with with a nylon bristled brush to remove any remaining pulp and the papery surface coating.
Score the top and bottom surfaces of the pit with a knife. Insert three toothpicks evenly around the center circumference of the pit.
Place the pit, pointed-side up, on the rim of a clear glass. Add enough water to the glass to cover the lower one-third of the pit.
Place the glass on a sunny windowsill out of direct sunlight and wait for it to sprout roots and a shoot.
Plant the pit in a 4-inch seedling container with a mix of equal parts of peat moss, sand and compost.
Transplant the seedling into larger containers as it outgrows it's existing container to prevent it from becoming root bound.
Dig a planting hole that is wider and deeper than the avocado. Plant the tree and create a mound of mulch around the base to retain moisture and fight weeds and grass.
Cultivate the soil around the base of the tree for its first two years to prevent weeds from choking out the avacado tree.
Fertilize with an ammonium sulfate fertilizer (21-0-0) around the base of the avacado tree at a rate of ½ cup per month the first year, 1 cup the second year and 2 cups per month the third year of the tree's life from February to September.
Water the tree at a rate of 1 inch per every 10 days.