Oleander is a beautiful shrub or small tree that, to me, is the signature plant of the Mediterranean. Like many plants it's poisonous in all its parts. Same can be said about foxgloves, yew, poinsettia, arum lilies, daffodil bulbs, thorn apples, Daphne mezereon, potato leaves and fruits and a host of others. The thing most of them have in common is that you're hardly tempted to eat them. Enjoy them and keep your kids away if it worries you.