Barenbrug Duo Pro™ 1463-50 Seed 50 lb - As a Perennial/Annual mixture, Duo Pro™ can be utilized in cool-season and warm-season areas as an overseed. With fast germination at lower-temperatures, Duo Pro repairs cool-season fields during the worst of growing conditions, when the threat of thinning turf and annual bluegrass invasion is always present. Warm-season areas overseeded with Duo Pro achieve the look of perennial ryegrass with the lower cost of the turf-annual. During transition, this blend will still require chemical removal due to the perennial components.