Lupins are such beautiful flowers, and I really enjoy to see them. Nevertheless, I will sometimes destroy them when I see them, if I can. The reason is they are among the alien invasive species that do harm in our nature, and they were blacklisted in 2007. By then they were almost all over the country. In many cases it was our road authorities that spread the lupins, to make the road edges look nice. We have three species, and they all originates from North America; Lupinus polyphyllus, Lupinus nootkatensis and Lupinus perennis. I can’t distinguish between them, but maybe you can?
I often see beautiful pictures of lupins in the nature where they belong, from fellow American bloggers. In the picture above, in a Norewegian mountain village, they don’t belong, and they soon get so many that the native species will not have a chance to grow. Typically they take the space from our native hare bells and oxeye daisies among others.
In a case like this the lupins should definitely be removed. It is still just a single plant, and if not removed, it will soon spread to the nature. According to our authorities we are allowed to remove alien species from the nature when we see them, and I think we all should do, when we can. It is similar to removing plastic bottles or tin cans, when we see them in the wrong place. But sometimes the plants are too many. It is too late, at least without a great effort removing them.
We are not even recommended to keep lupins in our gardens anymore, because they can jump the fence, with or without our help. And our authorities are very serious about invasive species. Here is a list of some of them. If you destroy and remove such plants, from your garden or from nature you can bring them to places for recycling, but if so placed in a sealed plastic bag and delivered to a separate container. They can be composted in your own garden of course, with consideration. These plants reproduce with seeds, a lot of seeds. There are some more pictures Link to my photos of blacklisted plants in Norway.