Iris unguicularis - Algeria Iris

Iris unguicularis, also known as Algerian Iris or formerly Iris stylosa, is a vigorous Mediterranean iris known for its delightful winter flowering and perfect adaptation to very dry summers. It is a perennial and rhizomatous plant that forms a beautiful clump of thin, tough, and erect leaves, which remain evergreen in winter. Its delicate lilac-blue flowers are touched with yellow. They bloom for several weeks. The Algerian iris likes full sun or partial shade. Grow it in any light and well-drained soil.

Iris unguicularis belongs to the Iridaceae family. It is a botanical species endemic to the Mediterranean basin, widespread from Greece to Algeria via western Syria and Turkey. This xerophilic perennial (which likes drought) has a dense tufted habit. Its dark green foliage is tough and remains evergreen in winter. It consists of long leaves measuring 50 to 60cm (20 to 24in), which are initially erect before lying down. The basal leaves are narrow and tapering with a slightly sharp margin. The growth of this iris is moderate. The plant reaches a height of 30cm (12in) and gradually spreads over 50cm (20in) and more through its thick rhizomes. The flowering can start as early as December, depending on the climate. The slightly perfumed, delicate and fragile flowers, 5 to 8cm (2 to 3in) in diameter, emerge from the stump. These solitary flowers consist of 5 unguiculate tepals: the 3 outer ones are wider and spatulate, while the other two are erect and narrow. The flowers are lilac with contrasting veins and a central yellow band on the tepals. The plant rarely opens more than ten buds at a time and is never bare (except during periods of severe frost). The Algerian Iris withstands temperatures down to -15°C (5°F) and needs a dry summer to flower well.

This Algerian Iris is ideal for beds, rockeries or borders, especially in dry gardens. In warm climates, it thrives in partial shade near large trees. In cooler regions, it can be planted in a sunny rockery. Its winter flowering is welcome on the edge of a path, next to a gate or doorway. In a rockery, it can be associated with plants that tolerate dry conditions such as small lavenders, Convolvulus cneorum, and sedums.

Delivered as a rooted plant packaged in a peat pouch.