A number of bearded varieties bloom from early spring to early summer. Among beardless irises, many varieties in the Spuria subgroup bloom from late spring to midsummer. Some Siberian iris (Iris sibirica) and Japanese iris (I. ensata) selections bloom from mid-spring to early summer.

What time of year do irises bloom?

Most irises flower in early summer. Some—mostly bearded hybrids—are remontant, meaning they flower again later in the summer. Irises attract butterflies and hummingbirds, and make lovely cut flowers. For iris companions in the garden, look to roses, peonies, and lilies.

How many times a year do irises bloom?

"Cycle rebloomers" produce a spring crop of flowers, then lie low during summer, and grow and flower again in the fall. "Repeaters" produce new flowers soon after the first spring flush dies back, extending the bloom season to one to two months. "All-season rebloomers" produce flowers irregularly throughout the season.