According to Aggie-Horticulture, Texas is home to numerous different types trees that have adapted to the state. Many trees are among the hillsides and woodland of Texas. When purchasing a tree for your landscaping needs, make sure to check the zone hardiness. Any tree that you purchase with a zone number equal or greater than that of your county's zone should be expected to survive the winters in Texas. Always check with your local nursery if you are unsure.
The pecan (Carya illinoensis) is state tree of Texas. It is a rounded, large tree that can reach 60 to 70 feet tall and 50 to 60 feet across. Pecans do best in soil that has been richly amended to 5 to 6 feet. Planting pecans from seed is risky because they do not come true; each tree is distinctly different than its seed parent. Pecans, which are outstanding shade trees, are generally sold bare-rooted and packed in moist sawdust or moss.
The redbud (Cercis Canadensis) is small and rounded tree that can reach 35 feet tall and 30 feet wide. Redbud trees, which are native to Texas, have a moderate growth rate. They adapt readily to a variety of soils and climates. In the spring, redbuds put on a glorious show of shocking pink flowers (red and white are also available) that last for several weeks.
Crape myrtle trees (Lagerstroenmia indica) are small and rounded. When mature, they can reach 20 to 30 feet tall and 25 to 35 feet across. Crape myrtles have a moderate growth rate, and they can grow in all parts of Texas. Crape myrtles have flower sprays from early summer to frost in red, pink, lavender, and white. To encourage additional blooming, keep the seed heads trimmed.
Live oak (Quercus virginiana) trees are a medium-sized tree that can reach 40 feet tall and up to 50 feet across. These trees, which have a moderate growth rate and thrive in the lower two-thirds of the state. Live oak trees are evergreen and do well in all kinds of soil.