Where can one purchase artificial flower arrangements?

* Dandelions are considered a weed so you may be hard pressed to find silk made Dandelions. Generally 'Michael's Crafts' or other larger craft stores sell silk flowers and if you can't find Dandelions then small Spider Mums or yellow Daisies would be a good bet. Silk flowers look more like the real thing and there is more of array of colors to choose from.