Runner beans are one of the easiest most versatile crops to grow, making them one of the staples of an edible garden. The majority of varieties are climbers, so not only take up less space than other crops but add height to the aesthetics of the garden.
Planting
Runner beans can be planted directly into the ground, or transplanted in soil blocks / old toilet roll tubes. They will not do as well transplanted from pots as they do not like root disturbance.
Runner beans like rich fertile soil, so ensure to add compost or manure to the soil prior to planting.
Sowing
If you are looking for an early harvest then sow undercover in April for planting out in May. If you don't have this option then plant directly outdoors in May.
What type of runner beans can I use?
There are many varieties of runner beans, but the easiest are phaseolus coccineus / scarlet emperor / painted lady / red rum, which is exceptional easy to grow and produces sweet tasting beans all season.
Where to plant
Runner beans don't take up much ground space, and can be plated very close together. However they can grow as tall as 3m so will need supporting. You can grow them traditionally up wigwams, but others have grown them up IBC's / Sheds / Trellises. So just about anywhere that has full sun for at least 6 hours per day. Runner beans need a strong support though, so remember they will need something to grow up.
How to care for Runner Beans
Soil conditions
Runner beans grow better with deep, rich soil that is fertilised with organic matter such as compost or manure. They are hungry plants and have very deep roots.
Watering
Runner beans are extremely thirsty plants, so make sure to water them regularly, especially when they have started to flower and produce beans. Mulching around the surface can help with this as it will trap in moisture and reduce the amount you need to water.
Problem solving
Slugs
Slugs are one of the biggest pests when it comes to runner beans, as they will eat your shoots before they have chance to take off. Make sure to treat around the base of the plant with egg shells or coffee grounds and add humane slug and snail traps. Read more about how to protect your plants from slugs in our Tips & Tricks: pests and weather post.
Aphids
Another pest that can cause destruction when your crop is more advanced are aphids. These little bugs are harvested by ants, and we all know how hard ants work - so they will invade. Ladybirds are a good way to help with an aphid problem, but also consider planting sacrificial plants.
Read more about how to protect your plants from aphids in our Tips & Tricks: pests and weather post, including what sacrificial plants work best!
Harvesting
Remember to pick your beans regularly, as leaving the pods on the plant will make the plant think it's done it's job for the year and in turn will stop production of beans. Aim for around 4-8 inches in length.
Eating and storing
Runner beans can be stored in the fridge, canned or frozen for an extended supply - however with them being loved by everyone (even then dog) you'll probably end up with none left!
You can also pickle and dry your runner beans, should you get bored of fresh, frozen and canned options.
FAQs
Do you need to stop runner beans at the top of the plant?
Runner beans won't keep growing up forever, they average about 3m if supported. If not supported they tend to tangle, so "topping" them by pinching off the tip of the plant can reduce over growth and will allow the plant to focus on the areas you can reach.
Do runner bean regrow each year?
Runner beans are perennials by design, and in their natural habitat will grow again in the spring, but due to the weather conditions here in the UK it is best to save some seeds on the plant to regrow from seed next year; avoiding mild and dry winters you will get a better crop.
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