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Iris reticulata is a bulbous perennial from the Iridaceae family, native to the Caucasus, Turkey, Iran, and northern Iraq. In its natural habitat, it grows on rocky slopes, screes, and dry alpine meadows, on well-drained, calcareous or volcanic substrates, often under snow for part of the winter.
It hardly exceeds 10 to 15 cm at the time of flowering. Its leaves are remarkably fine — quadrangular in section, almost needle-like — and lengthen considerably after flowering, reaching 30 to 45 cm. This is one of the most distinctive traits of the group: the plant seems to change silhouette over the weeks.
The flowers, borne individually on a short stem, display falls spread out in a blue-violet whose intensity varies according to individuals and cultivars, from light lavender blue to dark purple almost indigo. All share the same central mark: a bright yellow ridge, underlined with white speckled with dark violet — an immediately recognizable signature of the species. A light, sweet, violet-like fragrance often accompanies the flower.
In its natural habitat, its flowering extends from March to April depending on the altitude. In cultivation, it opens as early as February-March, sometimes in the heart of winter during mild winters, making it one of the first bulbous plants of the season.
The bulb is covered with a reticulated fibrous tunic — hence the species name — which protects it from thermal variations. It requires a very well-drained, light soil, in full sun, and appreciates a period of dry summer dormancy. It is perfectly suited to rock gardens, planters, raised beds, and crevices in walls.