Freezing is the best way to preserve rose petals until you are ready to use them for cooking projects, homemade bath items or decoration. You can freeze any color or type of rose petal in this manner. If you're planning to use the petals for food or skin-care items, make sure you're using your own roses or other roses that you're sure haven't been sprayed with chemicals. Freeze rose petals at any time of year you can find fresh roses.
Pull the petals off your roses, working carefully so as not to rip them. If you intend to use the rose petals for rose petal jam or other cooking projects, you don't need to worry about broken petals.
Place one cup of rose petals into a small vacuum sealable freezer bag. Press the air out with your fingers.
Place the bag in your vacuum sealer. Press the seal button. The vacuum sealer will suck the air out of your bag, which removes the oxygen from the bag. Without oxygen your rose petals will not spoil or bruise and will remain intact while freezing.
Remove the bag from the vacuum sealer once the sealer finishes. Place the bag in a long plastic container so the rose petals don't get squished by something else while they're in the freezer.
Place the container holding the rose petals in the freezer. Freeze additional packets of rose petals in this manner.