Plant Wine Festival Bearded Iris in well-drained soil with full sun exposure. Space rhizomes 12-24 inches apart, ensuring the tops are exposed to sunlight. Water sparingly, allowing soil to dry between waterings. Fertilize with a low-nitrogen fertilizer in early spring and after blooming. Remove spent blooms and cut back foliage in late fall. Divide rhizomes every 3-4 years to prevent overcrowding.