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Siberian irises

Posted by bellarosa z4-5/IL (My Page) on
Tue, Jun 10, 14 at 15:58


When is a good time to divide siberian irises? Please let me know. Thanks!


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RE: Siberian irises

In fall.

The "rule of thumb" for division of perennials is early blooming ones divide in fall - late blooming ones divide in spring. Less chance of inhibiting the bloom cycle with this method. Siberian iris do not have a root system that is sensitive to the timing of division (like beardeds or PC iris do) so I've found it best to follow this method.

Your climate may be a factor, though, if fall planting not advocated in your area.

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