Like many invasive species, Iris pseudacorus tolerates varied soil and climate conditions. It also propagates easily, forming a mat of branching rhizomes that grows so dense that it prevents other plant seeds from germinating.
'Pink Attraction' reblooms at least once in a season up to and including USDA Zone 4. Reblooming irises, also called remontants, may not reliably rebloom every year, possibly due to vagaries in the weather, and sometimes due to lack of nourishment.
"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.. . . . .364011235492!]0000000000000009783314145829!]
