Piet Oudolf

Piet Oudolf (Dutch pronunciation: [pit ˈʌudɔl(ə)f]; born 27 October 1944) is a Dutch garden designer, nurseryman and author. He is a leading figure of the "New Perennial" movement – his designs and plant compositions using bold drifts of herbaceous perennials and grasses which are chosen at least as much for their structure as for their flower color.