Three months is a long time to leave a greenhouse untended. Too long. Baby slugs had moved into one of the plantpots, dill had turned the colour of tea, and the only things growing in the courgette containers were grass seeds and dandelion roots. I cleared things up the best I could, scraping out the dried-up compost and planting some persimmon seeds I'd brought back with me from Japan. Outside, the slugs moved away with the speed of a Mark Viduka sprint.