Day 231: Siberian Iris (Iris sibirica) could be suspected of having plans for world domination, so persistent is it once it is established in a location. However, its spread can be held in check by placing it where incursions can be mowed. It is such a pretty addition to the garden, but it is difficult to weed between the rhizomes as is any iris, so should be planted where it can crowd out grass without impinging on other desirable ornamentals. Mine grow in several locations: up against one side of the garage, in between Thujas, at the back corner of the house...all places which needed both colour and greenery. The cheerful bright blue-purple flags are a welcome sight in the grey month of May.
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