How can I preserve flowers from an arrangement?

You can dry them in silica beads. You can buy them from a craft store in the floral section.

Hi Oneta, here's a Youtube video that might help

https://www.youtube.com/watch?v=X5HQ3MJPaLg

Here is some good information - for more than just roses!

https://dengarden.com/interior-design/how-can-i-preserve-a-rose

From the site:

8 Ways to Preserve Flowers

Here are eight methods for preserving those precious flowers. You will have to determine which one will work best for your situation. Your situation depends on the type of flowers you are trying to preserve and where you want to display the flowers.

1. Glycerin: Soak the flowers in glycerin and let them absorb the substance. This will cause the water in the flowers to be replaced with glycerin, and it will keep them looking fresh.
2. Freeze Drying: Take your flowers to a professional freeze-drying company and get them frozen.
3. Air Drying: Wrap your flowers up with rubber bands and hang them upside down on a hook in a well-ventilated area.
4. Pressing: Use a heavy book and some absorbent paper and press the flowers. Place the paper around the flower and put it in the middle of the book and close. Make sure the book is heavy enough to press the flower.
5. Microwaving: Cover the flowers in absorbent material and place them in the microwave on a moderate setting. Check to see if all of the water has been taken out of the flower before finishing.
6. Epoxy Resin: Get a mold and fill it halfway up with resin, then place the flowers inside the resin in the arrangement you want. Fill the rest of the mold in with resin and let it harden.
7. Sand: Place the flowers in a bowl of sand and let them sit until all of the moisture has been taken out. Gently brush off all of the grains of sand.
8. Silica Gel: Place an inch or two of silica gel in a container, then place your flowers on top and cover with another inch of silica gel. Place the let on the container and let it sit until all of the water has been pulled out of the flowers.

They use silica gel.....you can get kits at Michaels or Hobby Lobby or just hang upside down .. let dry.

I tie a string or ribbon around and hang suspended upside down. Once it is completely dry, then you can place where you want to display.

Put them in a vase with no water