When you've got an unruly and persistent patch of mint in the garden and it is also melt-the-asphalt hot outside, there is really only thing to do: make a pitcher of Arnold Palmers. Preferably with homemade lemonade. Here is my recipe, which deviates slightly from the Boca Raton classic:
juice of three lemons
1/2 cup sugar (or to taste) dissolved in warm water
litre bottle of carbonated water
whizz in a blender until frothy
Mix in a pitcher to a ratio of 1:1 with not overly sweet iced tea. Add a big bunch of mint leaves, stems and all. Serve in a tall glass with great chunks of ice. I heartily recommend it.