Here in Iceland, the lupine is seen as an invasive weed which people are trying to uproot. The were originally brought here in the mid 20th century from Canada to help the soil, as a lot of the land is essentially a desert, and lupines have the ability to enrich the soil with nitrogen. However, they quickly spread and suffocated other plant life, so that there are now wide lupine fields across our landscape. One of my tasks while working for a remote municipality was to cut down lupine fields. I would have to cut the same field 2-3 times over a single summer because of how quickly the plants grow.
It's controversial though, because some ecologists say that they are succeeding in their original purpose, and that with time, they will lose their competitive advantage, and other plant life will regrow in the lupine patches.