Not sure how far apart to plant your bearded irises? Discover the perfect spacing for flourishing irises, maximizing air circulation and lots of blooms.
Spacing your bearded irises depends on the desired effect. For a faster-filling clump, plant them about 12-18 inches apart with their fanning foliage facing facing in the same direction.
Wider spacing (like 18-24 inches) allows for more individual blooms and may delay the need for dividing the irises in the future.
If you are growing multiple varieties in the same flower bed, plant different types together in odd-numbered groupings. Planting in groups of 3’s, 5’s, and 7’s is usually a great start for a bearded iris garden bed.
While it is recommended to space the rhizomes 12-18 inches apart, you can get away with planting them closer together to get a fuller look from the outset. Just keep in mind you’ll need to divide them sooner rather than later to maintain their vigor.
Regardless of spacing though, when planting and mulching, make sure the rhizomes are not covered by the mulch. If they are, they may not bloom.
Follow along to learn more about how to planting bearded irises.