Nicotiana glauca Tobacco tree
This plant can grow to 5 metres and is native to South America. It flowers all year. It is now found all over the world in temperate zones. This particular plant appeared in a friend's garden this year in Ronda, the seeds dropped by a bird presumably. I have also seen it in Almeria. It is smoked by Native American Indians, but the leaves are highly toxic if ingested, causing death.