In weddings and official functions, you can find bouquets such as shown in the pictures. These are made from plastic flower petals formed together to make a rose flower ball.
These flowers are not only more enduring, but they can be recycled, taken down and rearranged in a different form. It can be washed when dusty or dirty.
I have found some videos in YouTube including the one below that gives an idea on how to make a flower ball. The video also teaches you to weave your own roses made from crepe paper (if you prefer to use crepe paper compared to plastic flowers).