50+ Chaste Tree Seeds (Vitus angus castus) - Fast Growing, Pepper Substitute, Edible Berries Other names: Vitex, Monks Pepper, Chasteberry Grow Zones: 6,7,8,9 Chaste Trees: The Edible Pepper Substitute That Will Amaze You If you are looking for a fast-growing tree that will also serve as an edible and healthy spice, Chaste Trees are the perfect choice for you. This beautiful purple flowering tree not only adds color to your landscape, but its berries can also be used as a flavorful pepper substitute. Chaste Trees, or Vitex agnus-castus, are native to the Mediterranean region and are a popular choice among gardeners and landscapers alike. They are known for their attractive, fragrant flowers that bloom in shades of purple from late spring to early summer, and their clusters of small, dark berries that resemble peppercorns. But the Chaste Tree’s usefulness goes beyond its beauty. Its berries have been used as a substitute for black pepper since the Middle Ages, and they are still used today in many dishes. In fact, Chaste Tree berries have a milder and sweeter taste than black pepper, making them a healthier and more flavorful option for seasoning your meals.