Pugster Periwinkle is a whole new look for butterfly bush - it offers a small, sturdy frame with flowers the size you'd find on much larger plants. Each bloom is a full, dense cluster of soft purple blooms, emitting a honey-sweet fragrance and treating bees, butterflies, and hummingbirds to a tasty snack. Like all Proven Winners butterfly bushes, it blooms all summer without deadheading.