Avocados are tropical or semi-tropical fruit trees that grow well in the Gulf Coast region, including parts of southern Texas. The fruit is approximately fist-sized, with creamy meat and an egg sized seed known as a pit. Due to the fruit's use in Mexican and Tex-Mex dishes as well as the tree's tropical appearance, the avocado tree is grown outdoors throughout southern Texas and in containers in other parts of the state. Avocado trees can be started indoors from the pit and transplanted outdoors in warm climates or left in a container in cooler locations.
Wash the avocado pit to remove any residual meat as well as the brown, papery exterior.
Poke three toothpicks around the center of the pit. Space each toothpick equidistant from its neighbors.
Fill a clear glass with water up to the rim.
Place the pit in the mouth of the glass so that the three toothpicks hold it suspended over the rim of the glass with its lower half in the water.
Put the glass in a sunny window out of direct sunlight. Within a few weeks the pit will grow roots and sprout.
Plant the pit in a 4-inch container with sandy, well-drained potting soil. Place the container in a location where it receives at least 6 to 8 hours of sunlight daily. Transplant the pit into containers barely larger than the plant's root ball as the plant grows.
Select a sunny location with well-drained soil for transplanting the avocado tree. Dig a planting pocket for your tree that is twice as wide and twice as deep as the root ball.
Scratch finished compost into the sides and bottom of the planting pocket. Place the root ball into the hole and fill with soil. Tamp the soil down to remove any air pockets, and water until the soil is as damp as a wrung-out sponge.