Chaste/Vitex Tree (Vitex agnus-castus)

A lovely, non-native old garden favorite in full bloom right now is the Chaste or Vitex tree. According to one of my garden books, a tea made from the leaves of this tree is said to be an anti-aphrodisiac used by monks to help them remain chaste, hence the name.

These trees, readily available in nurseries, have become more and more popular within the last few years even though it has been declared an invasive, exotic species. Its compact size, 10 – 15 feet tall, usually with many trunks and a broad crown, plus its colorful, blue blossoms provide the attraction. When crushed, the leaves have a strong aromatic aroma. The tree also has some medicinal uses.

A nice specimen of the Vitex tree can be seen behind the cedar fencing at the bottom of the Winters Wimberley House right near the entrance to the Community Center property on RR12. I have one in my yard but the blossoms are not quite as colorful as the new specimens seem to be. The EmilyAnn Theatre and Gardens also has several in bloom. The tree grows in alkaline soil and in either sun or part shade. It is drought tolerant although it loves to grow along creeks or streams.

Vitex has become naturalized in many parts of Texas. Interstate 35 south of Austin is said to have a very showy population.

When a tree or any specimen is said to be “invasive”, I usually try to back away from planting it. I am not a purist in this regard so I will occasionally plant something that I think can be enjoyed and controlled in a non-invasive way. Vitex or Chaste tree is one of those exceptions.

Written by Martha Knies