01/09/2012 at 12:42
There are several very good, 'tame' speedwells, which willnot take over your garden. What does the label say? If it is 'Georgia Blue' that is a real early spring gem, formng nice low hummocks of blue flowers with reddish stems and leaves when there is little else in the garden. While it is not unknown for people to sell ferocious plants, such as Russian Vine, sold as fallopia - it is not as common as we might think. If you are really worried about it, plant it in a pot for this winter and see what it does.