I have two oleanders, both in big pots and both spending the winter in my greenhouse (they'd be killed by the cold otherwise). I can make them flower if I put them in my sunshiny porch in summer. I also have two lantana bushes, another plant that you see all over the Med. They are also poisonous in all their parts. They have to tough out the winter in a sheltered outdoor spot by my front door. I love the Mediterranean and I love to have plants that remind me of my sunny holidays in Spain, Italy and Greece. To date, I'm not aware that anyone has nibbled them or tried to distil out the toxins. Foxgloves grow wild in my garden. I probably cultivate enough digoxin to kill half of Bude, but the bees love the flowers so much that I don't think I'll bother.