I take a walk round the neighbourhood once a day. Needless to say any plans I had for "rural rambles and field trips to the middle of nowhere" have been cancelled. So the local streets are my window on the world.
 I spotted this little clump of Lamium maculatum growing out of a crack in a wall. This is the form known as 'Roseum'. I grew some in a clay pot a year or two back but it didn't last. Also tried it in a couple of spots in the garden but it didn't take. And here it is self-seeded in a crack and doing fine!