In a medium saucepan, bring 2 cups of water to a boil.
Once boiling, remove from heat and add the dried hibiscus flowers. Let steep for about 15 minutes.
Strain the hibiscus tea into a pitcher, discarding the flowers.
While the tea is still warm, stir in the honey or agave syrup until fully dissolved.
Add the fresh lime juice and sliced strawberries to the pitcher.
Allow the mixture to cool to room temperature, then refrigerate for at least 1 hour to chill.
Serve over ice and garnish with fresh mint leaves if desired.