A large chaste tree grows just outside my window in the Brunswick County Botanical Garden. Since I started 4 years ago, it has reliably provided a show stopping display of purple flowers each summer ...

Purple is popping out all over Houston. The vitex tree is having its moment. Vitex agnus-castus has many common names, including chaste tree, Texas lilac, lavender tree — even hemp tree for the ...

* What it is: Just about everyone short of discerning horticulturists thinks the chaste tree is a butterfly bush when they see one blooming this time of year. It’s easy to understand because chaste ...