Iris hollandica blue is a rewarding summer bloomer that gives you a lot of pleasure. Iris hollandica flowers in June-July. Iris hollandica becomes about 50 cm high. This iris is therefore also well suited for planting in the border. Iris corms can be planted in the spring. Dig a spacious planting hole, loosen the soil and fill the planting hole with good potting soil. Place the tubers in the planting hole and cover with 5 cm. soil. The planting distance of the tubers is 10-15 cm. Water the tubers immediately after planting. Irises bloom most profusely in full sun. Iris hollandica combines well with perennials and other iris species. The blue flowers are real eye-catchers in the border. Store the tubers in a frost-free place after flowering and you will enjoy them for years.