Runner beans - a type of pole bean - were traditionally planted atop filled-in trenches dug the previous autumn and stocked with well-rotted manure or shredded newspaper. Kitchen waste will work too, because the main reason for doing this is to provide a deep, moist root run that will help runner beans to resist drought. Drought is a major enemy of beans, so avoid this at all costs.
Start sowing runner beans in spring and keep sowing every couple of weeks until early summer to spread out the harvest. Exactly when to sow will depend on your climate, so check out our Garden Planner for customized advice. The earliest seeds can be sown in modules or seed trays in a greenhouse, tunnel or on a sunny windowsill for transplanting later on.
Runner beans dislike cold soil, so wait until the soil has warmed to at least 10ºC (50ºF) before planting them out. You can warm soil a week or so in advance of sowing or planting using cold frames, cloches, row cover tunnels or even just sheets of plastic.
While closely-related French beans are self-pollinating, runners need help from pollinators such as bees and hummingbirds, so yields will be hampered by a wet, cold summer when insects are unlikely to be flying. A dry summer is bad news too, so make sure to water during rainless spells and mulch to preserve that moisture.
Bean wigwams look just as attractive in the flower garden as they do in the vegetable garden. Runner beans were originally grown purely as ornamental plants, so you can find exciting flower color choices such as ‘Scarlet Runner’ or the ravishing red-lipped white flowers of ‘Painted Lady’.
If you’re going to be away during the summer, invite friends and neighbors to help themselves to your beans to encourage continued cropping for when you return. Alternatively you could use the break as an opportunity to switch from producing fresh pods to maturing beans for drying. Gluts of the whole fresh pods can be chopped, blanched if you wish (I never do, I can’t tell the difference!) then frozen.
Beautiful, productive, and delicious – what more could a vegetable gardener ask for? Share your runner bean growing tips or favorite varieties with us in the comments section below.