Texas Vitex Tree

The Texas Vitex tree, also known as Vitex agnus-castus or Chaste Tree, is a popular ornamental tree in Texas landscapes, especially valued for its lavender-blue flower spikes, long blooming season, and high heat tolerance.

Overview of the Texas Vitex Tree

• Common Names: Texas Vitex, Chaste Tree, Hemp Tree

• Botanical Name: Vitex agnus-castus

• Type: Deciduous flowering tree or large shrub

• Mature Size: Typically 10–20 feet tall and wide

• Bloom Time: Late spring through fall (May–October)

• Flowers: Lavender to purple (also white or pink cultivars available)

• Growth Rate: Fast

• USDA Hardiness Zones: 6–9

• Soil Requirements: Well-drained soils; drought tolerant once established

• Sunlight: Full sun for best blooming

• Water Needs: Low to moderate; drought tolerant

Lifespan

• Estimated Lifespan: 15 to 25 years, potentially longer with excellent care and site conditions.

• The Vitex is not a long-lived hardwood tree, but its longevity is sufficient for most home landscapes, especially in hot, dry climates where other flowering trees struggle.

Texas A&M Recommendations

• The Texas A&M AgriLife Extension recommends Vitex for use in Texas landscapes due to its:

  • Drought tolerance

  • Resistance to pests and diseases

  • Long bloom season

  • Ability to thrive in alkaline soils

• Designated as a Texas Superstar® plant, which means it has undergone rigorous field trials and has proven reliable across the state.

Additional Notes

• Vitex is often used as a crepe myrtle alternative, especially in areas with powdery mildew problems.

• Can be pruned into tree or shrub form, depending on landscape design.

• Encourages pollinators: highly attractive to bees, butterflies, and hummingbirds