This shrub or small tree has showy yellow catkins that dangle from the twisting and corkscrew shaped branches in early to mid-spring cheering up the garden after a long winteGardening Smokebush - Cotinus coggygria
Why it works: The curved edge of the bed softens the 90-degree angle of the corner and creates more visual interest. Hint: Unless you have a formal, geometric garden, incorporate curves as much as you can in your landscape design. They're typically much more pleasing to the eye than straight lines. A series of easy, colorful plants including mums, pansies, spiraea, and purple smokebush makes this border a knockout.