When I moved here, I discovered some annual Oriental Poppies in the garden. These self-seed like crazy, so every year they have re-appeared in patches somewhere around the place, and I tend to leave them be. That way, I get a bit of spontaneity in the garden. As with life, it's not a good idea to overplan a garden; you need to leave space for nice surprises.
When they started they were all one colour, and double. This year, they have multiple shades of purple, orange, red and pink, and some are single rather than double.
Mauve, red, orange, double