IF you did you are all set with a crabbie treat! Before your roses completely wilt give them a thorough rinse to wash them clean. THen pull the petals off and then out on a towel or something for several days to dry thoroughly. A dozen roses will fill a gallon zip lock bag and last your hermies FOREVER! Mine love the dried petals.
If you didn’t get roses…run out tomorrow and buy some on clearance!