North Texas falls into U.S. Department of Agriculture plant hardiness zones 6 and 7, with winter temperatures of minus 10 to 10 degrees Fahrenheit. This range is well within the hardiness levels of rabbiteye and highbush blueberry cultivars.
All blueberries require the right sun, soil and nutrition to achieve their full growth. Plant blueberries in sites with full sunshine, good drainage and loose, rich soil. Amend planting soil with organic compost, peat moss and wood chips to achieve the right soil acidity. Use pine needles, wood chips and sawdust as mulch for these acid-loving plants. Blueberries won't reach full height or bear their fruit harvest without the right care.
Rabbiteye varieties grow well in warmer areas of the country, with higher tolerance of heat in the summer and warmer winters. According to Aggie Horticulture, rabbiteye blueberries grow to 15 feet tall and 10 feet wide, and mature in ten years. North Carolina State University recommends giving these plants 6 feet in the row and leaving 10 to 12 feet between rows.
Highbush blueberries demonstrate better cold hardiness than rabbiteye blueberries, and survive the colder northern temperatures of North Texas, but also stay smaller at 4 to 6 or 5 to 7 feet tall, depending on cultivar. North Carolina State University recommends only 4 to 5 feet of space in the row for these smaller bushes, with 8 feet between rows.