A floral design invoice is an invoice for services completed by a professional designer specializing in the arrangement of plants and flowers. Floral design, or flower arrangement, is a form of art that can be done on a small or a very grand scale. Arrangements can cost immense amounts of money, not only in labor but in materials such as plants, flowers, soil, tools, care products, etc. The invoice will include a list of all materials used and the associated costs as well as the hourly rate or a flat fee. The designer will deliver the floral design invoice once the task has been completed to provide the client with the total amount owed and the payment date.