In a large glass or shaker, muddle the watermelon slices, cucumbers, and mint leaves together.
Add white wine, St. Germain, Cucumber Vodka, and simple syrup to mixer. Fill the glass or shaker with ice.
Watermelon Vodka Cocktail Recipe made with St Germain and Cucumber Vodka
Stir the watermelon vodka cocktail and garnish with a watermelon wedge.