Cactus flowers can be dried and preserved. You can use the following methods,

1. Hang upside down to dry. The simplest method is to hang the bouquet upside down to dry. Tie a bouquet of flowers with a rubber band and hang it upside down in a well-ventilated and dark place. After a few weeks, you will have a bouquet of dried flowers.

2. Press and air-dry. When we were in school, we often picked a bunch of flowers and put them in books. After a long time, they can be used as bookmarks. This kind of air-drying is suitable for smaller bouquets. Arrange the shape you like on the paper, then press it with a thick book and wait one to two weeks.

3. Microwave drying is the fastest way to make dried flowers. Put the flowers in a bowl, put the bowl in the microwave, cover it with about 4 cups of cat litter or borax, and turn to high heat. Heat for two to three minutes. After the cat litter or borax has cooled, take the flower out and gently brush off the sand on it.