Introducing the world's newest type of hydrangea! Cascade hydrangeas naturally grow with long, arching branches, and they set a flower bud at every single leaf node. The result is a flurry of flowers, each stem taking on an elegant, garland-like effect. This type of hydrangea debuted at the Chelsea Flower Show in 2018 and while it's a very small group for now, it's poised to take the gardening world by storm.