Direct sow runner bean seeds from May until the beginning of June, when the soil has warmed up. If sown when the soil is too cold and/or wet the beans may rot. We recommend building the climbing structure first (poles distanced 65cm between rows and 40cm within the row) and then planting four runner beans at the base of each pole 4cm deep. This way you will know exactly where the beans have been planted and also you will not damage the roots when building the structure.
Runner bean growing calender
Phaseolus coccineus originated from the mountains of Central America. Most varieties of runner beans have red flowers and multicoloured seeds. They were first grown in Britain as ornamental climbers, and in most other parts of the world still are. They are naturally a perennial, but grown as an annual in our temperate climate.