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This species of spiderwort is a clump-forming herbaceous perennial which grows up to 3' tall with dark bluish-green, arching, grass-like leaves up to 1.5' long and 1.75" wide which are folded lengthwise forming a channel or groove. Clusters of blue (less frequently rose), three-petaled flowers (0.75-1.5" diameter) bloom from late May into early July. Each flower opens up for only one day. Can self-seed and become somewhat aggressive in ideal growing conditions. It is commonly found in prairies, wood margins, meadows, along roadsides, or in waste areas.