They are often unwanted, they grow in hostile environment, even if isolated.
This San Francisco-based artist has chosen to make them even more visible. She paints these giant dandelions, nettles and other unpopular plants on buildings and house walls.
I find it interesting, soothing and thought-provoking.
Her website : http://monacaron.com
Her Facebook page : https://www.facebook.com/mona.caron.artist