Iris xiphium, commonly known as the Spanish Iris, is an iris native to Spain and Portugal.
It is bulbous and bears handsome blue and yellow flowers, though they are not so large as those of I. xiphiodes. This species is also known as the Small Bulbous-rooted Iris. The Spanish Iris is favoured by florists for its striking colour combinations. This species has several varieties popular in horticulture, among them var. lusitanica whose flowers are yellow all over.
It is among the hardier bulbous irises, and can be grown in northern Europe. It requires to be planted in thoroughly drained beds in very light open soil, moderately enriched, and should have a rather sheltered position. It typically flowers in May and June, but not always.