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Iris x Hollandica Professor Blaauw is from the range of Xiphium Irises (Spanish Iris) created in the Netherlands. They are popular with florists, but equally good in the garden. Professor Blaaw is the deepest of blues with its fall marked with yellow.
Iris x hollandica Professor Blaauw has been awarded the RHS Award of Garden Merit because it has proved to be reliable in appropriate conditions and a good performing plant.
Iris x Hollandica Professor Blaauw should be planted 4" (10cm) deep and 4-6" (10-15cm) apart in a well drained position in full sun or very light shade. Water well on planting, and thereafter moderately.
Height 18-24" (45-60cm)