Flowers are great picture subjects. It is extremely difficult to take good flower pictures with a standard autofocus digital camera. I recently upgrade to a Nikon D10 Digital SLR. The Single Lens Reflect camera gives me greater control over focussing on the flowers. I am using a 28-90mm lens. Professional photographers are would likely use a more expensive micro lens for this type of photography.
This gallery shows garden flowers. Please see the page Wild Flower to view native wild flowers. As I now have several hundred pictures, I also list Flowers by Family.