If runner beans produce plenty of flowers but very few beans, it usually comes down to water stress, nutrient depletion, wind damage, or poor pollination.

Dry conditions can play a big part. Even if plants are watered regularly, when soil moisture drops during flowering or when tiny beans are first forming, the plant may abort the flowers or young pods, causing them to fall off before they develop.

Common reasons runner beans don’t set pods

• Dry soil during flowering. Runner beans need consistent moisture when flowers and pods are forming. If the soil dries out, flowers or small beans often drop.
• Nutrient-tired soil. Growing beans in the same spot year after year can reduce soil fertility and affect crop performance.
• Wind damage. Runner bean flowers are delicate and can be blown off before they set pods.
• Low pollinator activity. Runner beans are self-fertile, but bees help improve pollination and pod set.

Tips for better runner bean crops next season

• Grow beans in a new site each year where possible.
• Prepare the soil well with plenty of Daltons Garden Time Compost or organic matter before planting.
• Choose a sheltered position to protect flowers from wind.
• Once plants reach about 1 metre high, apply Daltons Premium Mulch and Feed to help retain soil moisture.
• Plant flowers such as lavender, calendula, or marigolds nearby to encourage bees and other pollinating insects.
• Consider trying a different runner bean variety, or even dwarf beans, which grow quickly and often produce reliable crops.

With good soil preparation, steady moisture, and plenty of pollinator activity, runner beans usually return to producing heavy crops the following season.