Sweet clover used to be a staple species for wildlife plantings. Unfortunately, the species can be pretty aggressive, and has now fallen into disfavor. It’s a non-native species, and not one I like to see on my sites, but I also don’t think it’s truly an invasive species – I don’t see it decreasing species diversity over time or changing ecosystem functions. …At least on my sites.
Click here to read more: http://prairieecologist.com/2011/09/21/sweet-clover-ugly-but-harmless-or-dangerous-invasive-species/