Gather the ingredients.
Pour 3 cups of boiling water over the hibiscus flowers.
Let the flowers soak in the water for about 20 minutes.
Pour through a strainer into a large pitcher. (Discard flowers or save for another purpose.)
Add the sugar and stir for 1 to 2 minutes or until sugar is dissolved.
Pour in remaining 6 cups of water and taste for sweetness. Add more sugar or water if necessary.
