In a small pan, bring the water to a boil, then remove from the heat. Add in the rose petals and beet powder (if using). Cover the pan with a lid. Let everything steep in the pan for 10 minutes. For fresh rose petals, chop them up a bit and lightly crush them to release the oils.
After steeping for 10 minutes, strain the water into a measuring cup with a spout.
Pour the rose tea into the heart ice cube molds and freeze for 2 hours, or until fully frozen.
Once the ice cubes are fully frozen, pop them out of the tray and store them in a freezer bag. Push all the air out of the bag before returning to the freezer.
Add to your favorite drinks!