I dunno, the Norse settlers were apparently getting a lot out of trading red died cloth for native produce and if it hadn't been for the altercation that somehow grew up around that cow or bull the possibility of trade might have drawn a lot more Norse in, the way the fur trade did in French North America.

But then again farming populations can expand really fast with low population pressure. The 13 colonies were seeing their populations double every generation just from natural fertility even before immigration.