![]() ![]() Be sure to provide your Iris with good drainage, planting either on a slope or in raised beds. In extremely hot climates some shade is beneficial, but in most climates Iris do best in full sun. Some of the more moderate areas may plant later (mid to late August). In areas with an early onset of winter early planting may be preferred (mid-July). Iris should be planted so the tops of the rhizomes are exposed and the roots are spread out, facing downward in the soil. It’s important that the roots of newly planted Iris be well-established before the growing season ends. ![]() When to Plantįor best results in Canada, Iris should be planted in mid-July or August. Treat your garden and yourself to some of these fine irises flowers. Here are a few suggestions for growing Iris. With a minimum of care they will reward you with beautiful blooms year after year. Today’s hybrid bearded Iris come in a rainbow of colors, and they’re one of the easiest perennials to grow. Or perhaps you may have thought they were difficult to grow. The rhizome should be just barely covered, and may even be slightly exposed at the point where the leaves emerge.ĭo not mulch over the planted rhizomes, as this can encourage root rot.You may have thought bearded Iris were only blue or purple. The fleshy body of the rhizome should rest on the soil mound.Ĭarefully backfill the hole with amended fill soil and tamp the soil firmly down against around the rhizome and leaves. When to Plant Iris Rhizomes Most commercial growers ship iris rhizomes in late August or September when nighttime temperatures range between 40 and 50 degrees Fahrenheit. Remember that these plants are fast-growing, and giving them plenty of space will allow them several years before you need to lift and divide them again.ĭig individual holes about 4 inches deep and 10 inches wide, and create a narrow mound of soil in the bottom of the hole, over which you will spread the roots of the rhizome. Give individual rhizomes at least 3 inches of space between them for smaller varieties, or as much as 2 feet for tall bearded varieties. ![]() In a sunny, well-drained location, plant the bulbs again. Remove any diseased or damaged dwarf irises before digging up the bulbs in early autumn and replanting them elsewhere in your garden. It is not uncommon for dwarf iris plants to become established in the wild and form dense swaths. Space rhizomes 12 to 18 inches apart to avoid overcrowding and allow for good air circulation to help prevent disease issues. Replanting Irises in the Fall: Dwarf Irises. It could be anywhere from late summer to the early weeks of fall. The best time to plant iris is when nighttime temperatures fall between 40 and 50 degrees. Place the rhizome on a ridge of soil, placing the roots in the soil, but the rhizome just above soil level. Planted at the right time, irises will be strong and established enough to survive the winter. Plant family: iris family (Iridaceae) Other names: stinking gladwin, gladdon, Gladwin iris, roast-beef plant. Profile of stinking iris: Scientific name: Iris foetidissima. The rhizome sections are best planted in groups of three or five, arranged so that the leaf fans are oriented the same way, with the rhizomes just barely covered and all pointing the same direction under the soil. About four to six weeks after they flower, divide by digging up the whole clump and remove the mother plant. Stinking iris is a robust iris species with luminous seed heads, which enriches near-natural plantings in open spaces or along the edges of trees and shrubs. For light and sandy soil, plant the bulb in a slightly shallower hole. This depth will be deep enough to expose the bulb’s top and keep the root firmly planted. Your iris should be planted in a hole about 4 inches deep. The Spruce Home Improvement Review Board To plant the iris bulb properly, you want to make sure the roots are pointed down toward the soil. ![]()
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