When to Plant Irises. Plant most irises in late summer to early fall, when nighttime temperatures remain between 40° and 50°F (4° and 10°C) or above. This gives them plenty of time to get established before the coming winter. Tall bearded iris varieties are best planted closer to fall because they tend to go dormant in early to mid-summer.

2024年8月15日 · Knowing when to plant irises can determine whether you have blooms at the right time of year and whether you'll get a vibrant crop of flowers. You have to plan ahead and think about where you want your irises to bloom in your garden nearly a year in advance.

For best results, plant iris rhizomes in July, August or September. This is also the best time (plants are normally dormant during the heat of July and August) to divide and replant iris that have become overcrowded, usually after three to five years.

2022年9月27日 · Let’s take a closer look at when, where, and how to plant iris bulbs. What’s the Best Month to Plant Irises? Iris rhizomes, or the roots that the plant grows from, should be planted in the late summer or early fall, usually July and August, or even in September if you live in a warmer climate.

2023年3月30日 · Best practice dictates that bearded iris should be planted some time from midsummer to early fall. Ideally, planting at this time helps to ensure that the iris is able to devote its energy to the development of a healthy root system before the arrival of winter.

2023年10月6日 · The best time to plant irises in zone 4 is from mid-August to mid-September. Best time to plant: mid August to mid September; Best irises for zone: German, Siberian, and Japanese; Recommended varieties: Iris ensata ‘Queen’s Tiara,’ ‘Iris germanica ‘Before the Storm,’ Iris sibirica ‘Butter and Sugar’

Irises are typically planted in late summer to early fall, with many gardeners opting for September through October as the prime planting window. This timing allows the iris rhizomes to establish themselves before the winter chill sets in, ensuring a strong foundation for the blossoms to come.

2024年11月22日 · Most Irises are best planted in late summer (early fall at the latest). This gives the iris a chance to establish its roots while there is still enough sunlight to fuel its growth so that it can survive the winter. For most Iris varieties, July and August are …

The best time to plant iris rhizomes is late summer through early fall. This is why most bearded Iris growers ship out their selections at this time. This gives most gardeners the chance to get them in the ground so the rhizomes can settle in and the root system develops before the first hard frost or a hard freeze.

Iris plants are hardy herbaceous perennials that are easy to grow from bulbs or creeping rhizomes. Learn the best time to plant and how to grow them.