Answer: In California it's likely that the leaves will remain green all year. In that case, you can cut the leaves back by two-thirds in early spring to encourage the plant to put out new leaves. <br><br>The flower stalks of iris are typically cut back as soon as they've finished blooming. Generally speaking, the rhizomes should become dormant in the summer when they can be lifted and divided. Since you ve only recently planted your iris, they can safely remain in place for a few years. When the clumps become overcrowded, you can divide and replant.
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