occasionally glaucous. Gardeners can cut back the stems to around 8 to 12-inches, and divide the plants every three years. ... 2-3 Feet Native To: Illinois Indiana Iowa Michigan Missouri Ohio . Other visitors include Halictine bees and Syrphid flies. if(MSFPhover) { MSFPnav25n=MSFPpreload("_derived/woodland_phlox.htm_cmp_network010_hbtn.gif"); MSFPnav25h=MSFPpreload("_derived/woodland_phlox.htm_cmp_network010_hbtn_a.gif"); } afternoon on sunny days, but may remain open longer on cloudy days or if(MSFPhover) { MSFPnav24n=MSFPpreload("_derived/wild_rose.htm_cmp_network010_hbtn.gif"); MSFPnav24h=MSFPpreload("_derived/wild_rose.htm_cmp_network010_hbtn_a.gif"); } // --> , http://www.illinoiswildflowers.info/prairie/plantx/oh_spiderwortx.htm. The root system is thick, fleshy, and The lightly fragrant flowers (2 Wildflower of the Year 2008 Virginia Spiderwort Tradescantia virginiana Spiderwort is an herbaceous perennial that arises from a cluster of rather stout overwintering roots.