Considered "the most influential garden designer of the past 25 years," Dutch plantsman Piet Oudolf has done for perennial gardening what artist Leonard Ko

'Mighty Chestnut' daylily is a mighty fine addition to summer garden beds with other colorful perennials.

The key to creating a mixed perennial bed is to use a limited plant palette, and repeat-plant in waves as seen in this wood-land style perennial garden in Melbourne created by Ian Barker, director of Ian Barker Gardens.