Iris Reticulata Blue Note Bulbs Are A New Dwarf Iris Introduction. Once Grown, These Iris Bulbs Produce Dramatically Dark, Navy Blue Tips & White Marking On Its Lower Petals (known As Falls) Which Really Make It Stand Out From The Crowd.to Make An Exciting Container Display, Team These Iris Bulbs With A Pale Dwarf Iris Such As Natascha Or With White Crocuses. These Dwarf Irises Are Also Excellent For Under-planting Container Shrubs Or Planted Beneath Roses.