Looking like a butterfly bush on sterioids, Vitex agnus-castus, or Chaste Tree, is enjoying a comeback in gardens with some compact varieties that fit into smaller gardens. It’s easy to grow in well-drained soil and drought-tolerant and disease resistant.
Not the tidiest plant in the garden, the newer varieties, like ‘Shoal Creek’ will top off at 10-12′ tall and wide. But with cutback pruning in the early spring, you can keep it much smaller. I treat it like my butterfly bushes and cut it back to about 2 feet tall in the early spring/late winter. Winter hardy to zone 6, this beautiful large shrub or small tree blooms profusely and for a long period in July and August. Foliage is very aromatic- compound, palmate, grayish-green leaves with 5-7 lance-shaped leaflets-similar to marijuana!
Bumblebees adore this plant and cover the blossoms and will even spend the night on the flower. Deer resistance adds another attribute to this valuable late season sun-loving plant. Native to China and India, Vitex has been in the U.S. since the 1600’s and has a long history as a medicinal plant.
The common name of ‘chaste tree’ refer to the beliefs that parts of the plant reduce libido. Known as a spectacular, butterfly-attracting plant, the 12″ fragrant flower spikes are a beautiful deep lavender blue and very showy. ‘Shoal Creek’, the cultivar that I am growing, is a deeper more vibrant lavender color than the species and I would advise seeking out this variety.