Roses from nothing

The magician enters the stage, shows his hands completely empty to the audience and suddenly produces a rose out of thin air... he places it inside a hat (or any another container) and again from nowhre produces another rose, he drops it in the hat, and immediately  produces another rose and then another, and another, and many more in rapid succession.
At the end he takes the hat with all the roses inside, and turns it over... the roses have now all magically dissappeared.

• Classic magic... always successful.