40 Perennial Plants to Create Your Perfect Summer Garden

29. Balloon Flower

Few flowers capture a child's imagination like the Balloon Flower. This hardy perennial thrives even in northern climates, with lush green foliage supporting balloon-shaped buds that can actually be squeezed and "popped" open! Many of us likely couldn't resist doing this as kids, despite countless admonishments.

The whimsical buds, along with the beautiful blue flowers, make it a must-have for any playful garden. It might even evoke a sense of nostalgia for those who grew up with green-thumbed family members.