Sow broad beans in October and harvest in early summer
Sow broad beans now and you'll be picking them in early summer, while the bed gets a free nitrogen boost. Here's what matters for variety, depth and winter protection.
While most beds are being cleared, one crop is just getting started: the broad bean. Sown in October, it stands strong come spring and carries pods long before bush and runner beans are ready. A smart plan if you’d rather not leave your bed empty over winter.
Why autumn sowing pays off
Broad beans (also known as fava beans) like it cool. Sown in spring, they quickly run into summer heat and become a feast for black bean aphids. Autumn-sown plants, on the other hand, build up strong growth by spring, flower earlier and set pods sooner. Harvest usually starts in June, or as early as May in mild locations.
There’s a soil bonus too: like all legumes, beans live alongside nodule bacteria that fix nitrogen from the air. After harvest, cut the plants off at ground level and leave the roots in the soil – the next crop will benefit.
Variety, sowing depth and spacing
Choose varieties explicitly sold as hardy or for autumn sowing. Spring varieties often don’t survive hard frost. Sow the seeds about 5 to 8 cm deep, roughly 10 to 15 cm apart in the row and about 40 to 50 cm between rows. If you like to keep track, note down sowing date and variety – in spring you’ll see which one coped best with winter.
In mild lowland regions and wine-growing climates you can sow into November. In harsher areas, such as higher Alpine elevations or upland ranges, sowing in February or March is the safer bet.
The right spot in your bed
Broad beans are not heavy feeders and don’t need freshly fertilised soil. A bed that just held potatoes, courgettes or lettuce is ideal. What matters is free-draining soil: winter waterlogging is more dangerous than frost.
Lettuce, cabbage and carrots make good neighbours. It’s better not to put peas right next to them, as both are legumes and share diseases. And plan your rotation right away: no beans or peas in the same bed next year, but hungry crops like cabbage or tomatoes are welcome.
Getting through winter
Ideally the seedlings are 5 to 10 cm tall before the first frost, not much more. Plants that grow too big are more sensitive. A layer of leaves or straw between the rows protects the soil, and fleece laid over the bed helps during frosts without snow cover in January. If a few plants fail to sprout again after hard frost, you can fill gaps with leftover beans in spring. That keeps the risk manageable.
Mice also like the seeds. If mice are known in your garden, covering the rows with fine mesh or fleece until the seedlings emerge helps.
In spring: pinching out and harvesting
As soon as the lower flower clusters start forming pods, you can pinch out the growing tips. This keeps the plant compact and removes the black bean aphid’s favourite spot – the soft tips. You can briefly steam the tips like spinach, by the way.
Harvest when the pods are plump but the beans inside are still green and tender. Important: only eat broad beans cooked, ideally boiled for at least 10 minutes. Raw, they don’t agree with everyone. People with favism (inherited G6PD deficiency) should avoid broad beans altogether. In Rootivo, the sowing bell in the plant encyclopedia reminds you in time of the next sowing window.