I didn't know that you could grow chocolate in the garden!! Well, you can grow the delicious aroma of chocolate by planting Chocolate Cosmos. The plant is a perennial, and it attracts butterflies. Their chocolate scent is heavier in the late afternoon and evening hours. HOWEVER, these plants CANNOT be eaten!!! This picture is from the Better Homes and Gardens website. I don't remember seeing these delicious smelling blooms at any garden shop, but I'm sure going to be on the lookout for them.