The winter flowering Iris unguicularis continues to provide interest on the Systematic Beds.
Favouring a sunny, well-drained position, Iris unguicularis is a vigorous beardless iris from the Mediterranean, though it is prolific in Algeria, hence the common name Algerian iris. It produces a dense mat of rhizomes on the soil surface, from which emerge narrow, grass-like leaves to 60cm in length. The large flowers are either stemless, or are held on short stems, and nestle amidst the foliage. They are variable in colour from pale lavender to deep blue, with a central band of yellow markings on the falls.