Dutch Irises (Iris Hollandica) are beautiful, low maintenance plants, that multiply quickly and naturalise well. They will reward you with gorgeous flowers year after year with little fuss. This Iris Hollandica Mixed flower bulb collection will provide you with stunning different coloured irises. They flower in May/June and grow to about 60 cm. Dutch Irises make excellent cut flowers that can be used in spring bouquets and other flower arrangements.