Catawba crepe myrtle. If you love violet flowers and reddish-orange fall foliage, consider planting this Crape Myrtle in your Houston, Texas garden. This pretty tree will grow to be about 20 feet tall, and does best when planted in full sun. It can tolerate cold down to single digits (unlikely in Houston, Texas) and is also disease resistant and drought tolerant. This Crape Myrtle is a good choice for an accent plant or small landscapes. It will bring birds to your Houston, Texas garden.