I’d forgotten all about planting these sunflowers. Back in May I was passing here, pulled over and prodded in the contents of half a packet of seeds in what was a barren central reservation on the busy Denmark Hill. It’s a dicey location, not one to spend long on for fear of getting decapitated by a passing truck, but I forgot to even make a brief return visit for weeding or anything. It was down to nature to take on the fight to brighten up this road. Now, nearly five months on.they are towering as high as a double decker bus and look like they have weeks of life left in them yet. Slugs had no chance of tracking them down here on this island of fertility in a desert of tarmac. Some had been damaged by passing traffic but it just goes to show how easy guerrilla gardening can be!