There's an easy how-to for this sugar after the jump. What would you use rose sugar for?
For this sugar you'll need:
1/2 cup to 2/3 cup sugar
1 cup to 1 1/2 cups rose petals
A glass airtight jar, like a mason jar
This ratio can easily be changed for the amount of sugar in the recipe you're using. The amount of rose petals can also be adjusted depending on how strong you want the rose aroma to be.
Start with fresh garden roses, florist roses will most likely have been sprayed with pesticides (I may have "borrowed" some from gardens in my neighborhood). Make sure you don't have any creepy crawlies on them and rip off the desired amount of petals.
Place the sugar and petals in your glass jar, seal, and shake. Then let it sit for one to two weeks shaking occasionally and ta-da, rose sugar.