Hi All: Please be careful when using the term 'invasive'. It carries legally defined/regulatory connotations linked to documented negative impacts on native plants in undisturbed natural areas. So far, our experience at CBG is that Scilla sibirica does not invade natural habitats. It does however, persist around old farmsteads and it does reseed in gardens and other cultivated (roadsides for instance) areas, but not the natural habitats. I believe Mary Sue covered a similar topic (invasive versus persistent plants) a few weeks ago regarding the California region. Many thanks, Boyce Tankersley Director of Living Plant Documentation Chicago Botanic Garden 1000 Lake Cook Road Glencoe, IL 60022 tel: 847-835-6841 fax: 847-835-1635 email: btankers@chicagobotanic.org The S. sibirica is invasive in the Chicago area UZDA Z 5a--on its way to 6