The craft of floristry, or being a florist, involves various skills and creativity. A florist should be able to select flowers and other floral supplies and materials that will look good together (based on principles and elements of floral design or market demands), know how to handle and arrange flowers and plants so they will remain fresh as long as possible, and would be desirable for purchase, which also involves knowledge of customers' requirements and expectations. Ability to create a variety of floral designs such as wreaths, bouquets, corsages, boutonnières/'buttonholes', permanent arrangements and other more complicated arrangements is also important.
Source : http://en.wikipedia.org/wiki/Florist
See Also : Flowers, Send Flowers, Flower Delivery