The instructions on the packet said the beans should be spaced well apart but I only had a limited amount of soil and still wanted a serious crop of beans, so I just shoved about twice as many seeds into the trough and hoped for the best.
As the weeks went by the seeds sprouted into shoots and by July I was munching on my first ‘crop’. Weirdly furry, they otherwise looked pretty normal, if slightly bulbous, and they tasted really fresh and clean. I boiled them for a few minutes and then tossed them in olive oil with some lightly fried garlic and fresh mint: lush. And all the more satisfying that they came from my own scuzzy balcony-garden.