Siberian Iris (Iris sibirica). Hardy herbaceous perennial Description: Showy, six-segmented flowers bloom in late spring; the 3 outer petals (falls) are beardless; the species flowers are shades of blue and purple; grass-like foliage Habit: 2- to 4-foot erect plants forming clumps 18 to 24 inches wide Culture: Grows in full sun or partial shade; tolerant of poor, dry soils, but grows best in fertile, moist, slightly acid soils Hardiness: USDA Zones 3 through 9 The Siberian Iris was first introduced... - Siberian Iris (Iris sibirica). |