Compact and floriferous! Tough as nails but still beautiful. Small enough that it can and should be in everyones landscape.
From Proven Winners: Very hardy reblooming hydrangea! We love Hydrangea serrata because they are so bud hardy and bloom reliably.

This is a real beauty, with flowers so delicate and refined that it seems strange to call them tough - but they are. As mentioned, extremely bud-hardy, each year it produces abundant lacecap flowers comprised of doubled sepals. It is a rebloomer. While this plant leans to blue, the flower color may range from blue to pink to white, all soft, delicate shades perfect for refined gardens.

The flowers age to an attractive pink, and tip down in a distinctive arching fashion. It has smaller, narrower leaves and an abundance of dainty flowers that cover the plant every summer. It has never failed to bloom in our western Michigan trial gardens. Add aluminum sulfate to the soil to encourage blue flower color.

Continuous Bloom or Rebloomer
grows to only 18-24"