Note : this page is from a North Carolina website so you need to take into account local seasons

Basil (Ocimum basilicum L. and its varieties) is a popular herb known for its flavorful foliage. The fresh or dried leaves add a distinctive flavor to many foods, such as Italian style tomato sauces, pesto sauce and salad dressing. The essential oils and oleo-resins may be extracted from leaves and flowers and used for flavoring in liqueurs and for fragrance in perfumes and soaps.

Continued @ ncsu.edu