horticulturist

a specialist in the growing of fruits, vegetables, flowers, or ornamental plants, typically concentrating on either the growing of plants for food (pomology, dealing with fruit and nut crops, and olericulture, dealing with herbaceous plants for the kitchen) or plants for ornament (floriculture, dealing with flowers and ornamental plants, and landscape horticulture, dealing with nursery crops such as shrubs, trees, and vines).