Vitex agnus-castus Delta Blues - Chaste Tree

Vitex agnus-castus 'Delta Blues', also known as Chaste Tree or Monk's Pepper, is a very recent variety that has more than one advantage. This shrub has a more compact and elegant habit than the typical variety, and is also distinguished by its summer flowering in clusters of vivid and intense purple-blue flowers, reminiscent of buddleias. The flowering is followed by the formation of small, compact clusters filled with red and shiny 'peppercorns' that persist throughout winter. Its beautiful palmate dark green foliage emits a fragrance, as does the entire plant. This deciduous shrub is hardy, undemanding, resistant to salty soils, and drought-tolerant once established. Easy to grow and maintain in the garden, it prefers sunlight and well-drained soil.

Vitex agnus-castus is a deciduous shrub belonging to the Verbenaceae family, native to the Mediterranean basin and Asia Minor. While it is particularly robust and easy to grow, it is often criticised for its excessive growth, disorderly habit, and lackluster flowering. All these flaws have been corrected with this new 'Delta Blues' variety, obtained in 2013 after years of experimental selection in the United States. 'Delta Blues' forms a rounded and bushy, very compact shrub with gracefully upright branches. When mature, it will measure approximately 2.75 m (9 ft) in all directions. Its flowering occurs from July to September, depending on the climate, on the current year's shoots. Spectacular and dense spikes, covered with tiny intense purple-blue flowers, cover the plant. Then small fruits the size of peppercorns appear, which are aromatic, dark red and shiny, and persist until winter. The fast-growing stems are strong and very flexible. They bear deciduous palmate leaves, divided into 5 slender lobes, and their colour is a beautiful bluish dark green. The foliage emits a strong pepper scent when crushed, hence its nickname of Pepper Tree. Vitex plants develop a very deep root system, which allows them to draw moisture from deep down when the summer is dry.

Often found by the coast, Vitex agnus-castus withstands drought once well established. Retaining the qualities of this undemanding and sturdy shrub, the 'Delta Blues' variety proves to be much more elegant, brighter, and easy to use in the garden. Its modest growth allows it to fit into small gardens, in a free hedge or as a grove, alongside oleanders (in mild climates), pink repeat-flowering roses, buddleias, or even summer tamarisks.

Its vernacular name of 'Monk's Pepper' dates back to the Middle Ages when some clergymen consumed the berries of the shrub to resist the temptations of the flesh. Since then, studies have proven the plant's properties in relieving problems related to hormonal fluctuations in women. In Ancient Greece, Vitex stems were used to make strong bindings. Legend has it that Ulysses tied his companions with such bonds under the bellies of sheep, allowing them to escape from the Cyclops' cave.