The rhs have awarded phlox douglasii 39red admiral39 an agm 40award of garden merit41 and it39s easy to see why the hardy perennial39s green foliage forms a dense mat which suppresses weeds it is a disease resistant versatile plant that grows vigorously while remaining compact in the early spring moss phlox bursts into bloom producing bright pink flowers that are sure to transform borders patio containers and rockeries alike into colourful displays height 15cm 406