Very pleasing the way these self-seeded Nasturtiums (Trapaeolum majus) have gone wild on the allotment. Nasturtiums are an annual and I sowed a packet or two of seed under the bean poles last year as a form of companion planting. The seed those plants shed has formed an ever increasing patch this year, and it's still growing.

 The first frosts will kill them off -the allotments are something of a frost pocket- but I notice there is already a copious amount of fresh seed under the foliage. I will gather some of it for elsewhere and leave the rest to germinate where it lies.