Mints weave a striking tapestry in the vase, adding different leaf textures, colors and scents. Count on mint to hold its own as a centerpiece, or use it to add movement and refreshing green shades to other garden-fresh arrangements. A fresh mint bouquet inside offers an easy way to take a quick snip when prepping favorite dishes. In terms of flavor, mint is at its freshest when first picked. The longer mint sits in water, flavor notes shift and may become bitter, especially if you see roots forming along submerged stems.