Basil is a favorite plant in the summer herb garden and an absolute must for those who enjoy fresh leaves for a sandwich or delicious homemade pesto. While we grow basil as a food enhancer, an added benefit is that those basil selections that form flowers are very attractive to pollinators. If you would rather not let your favorite edible basil form flowers, consider adding a African Blue Basil that is grown more for its attractiveness to pollinators than its culinary uses.. Mature Size: 24″ x 18″. Full Sun (6+ Hours).