The Ultimate Guide to Broad Beans

Why Grow Your Own Broad Beans?

• Easy to grow and suitable for beginners
• Hardy and well adapted to the UK climate
• Suitable for autumn and spring sowing
• Productive in relatively small spaces
• Attractive to bees and other pollinators
• A valuable source of plant-based protein and fibre
• Excellent for freezing and preserving
• Available in compact varieties for raised beds and containers
• Useful within a varied crop rotation
• Perhaps their greatest advantage is their timing.

When and Where to Grow Broad Beans

The Best Position

Choose somewhere:

• Sunny and reasonably sheltered
• With fertile, well-drained soil
• Protected from strong winter winds
• Where plants have room to develop
• Where supports can be installed if necessary

Soil Requirements

Do Broad Beans Improve the Soil?

Sowing Broad Bean Seeds

• Prepare the soil and make a drill approximately 5cm deep.
• Place seeds around 15–20cm apart and allow approximately 45–60cm between rows, depending on the variety.
• Cover with soil, firm gently and water if the ground is dry.
• Broad beans are often grown in double rows, making it easier to support the plants as they grow.
• Germination usually takes around one to three weeks, although colder soil can delay emergence.

• Starting seeds in pots can be particularly useful where the ground is too wet or cold for direct sowing.
• Use individual deep pots or root trainers filled with peat-free multipurpose compost.
• Sow one seed per pot, approximately 5cm deep, and keep in a cool, bright, sheltered position.
• Once the seedlings are established and outdoor conditions are suitable, gradually harden them off before planting.
• Broad beans develop substantial root systems, so avoid leaving them in small pots for too long.

• Mice can sometimes dig up broad bean seeds before they germinate, while birds may damage young seedlings.
• Where this is a problem, protect newly sown areas with suitable mesh or other secure coverings.
• Ensure any netting is correctly installed and regularly checked to prevent wildlife becoming trapped.

Caring for Broad Bean Plants

• Broad beans are generally less demanding than many summer vegetables, but they still need adequate moisture.
• Watering becomes particularly important during flowering and pod development.
• Dry conditions at this stage can cause flowers to drop or reduce the number and size of developing pods.

• Water deeply rather than little and often
• Direct water towards the soil
• Avoid unnecessarily wetting foliage
• Use collected rainwater where possible
• Mulch around established plants to conserve moisture
• Autumn-sown plants usually require little additional watering over winter.

• Taller varieties can become top-heavy, particularly once their pods begin to develop.
• Strong winds may cause stems to bend or collapse.
• A simple support system can make a considerable difference.
• Place sturdy stakes around the bed and run garden string between them at different heights.
• Double rows are particularly suitable for this approach, as the plants can support one another within the framework.
• Compact varieties such as 'The Sutton' may require less support, although exposed locations can still benefit from it.

• Help retain soil moisture
• Suppress weeds
• Protect the soil surface
• Reduce competition for water
• Gradually contribute organic matter
• Keep the area around the plants free from weeds, taking care not to damage their relatively shallow feeding roots.

• One of the most useful broad bean growing techniques is pinching out the soft growing tips.
• This is usually done once the first pods have begun forming on the lower part of the plant.
• Removing the tender tips can help discourage blackfly, which often gathers around new growth.
• It may also encourage the plant to direct more energy towards developing pods.
• The young growing tips are edible when healthy and can be lightly cooked like spinach.

Broad Bean Flowers and Pollination

• Broad beans are capable of self-pollination, but insects, particularly bumblebees, can improve pollination and pod development.
• The flowers are especially attractive to long-tongued bees, which can reach the nectar inside.
• Some bees may also obtain nectar by making small holes near the base of the flowers, a behaviour known as nectar robbing.

• Broad bean plants can produce plenty of flowers without every flower developing into a pod.
• This is not necessarily a problem.

• Cold or excessively hot weather
• Lack of moisture
• Poor pollination
• Plant stress
• Unfavourable growing conditions
• Broad beans generally produce their best crops in relatively cool conditions.
• Very high temperatures can interfere with flower development and pod setting.

Common Broad Bean Pests and Diseases

• Blackfly, also known as black bean aphid, is one of the most familiar broad bean pests.
• Large colonies of small black insects gather around tender shoots, stems and growing tips.
• They feed on plant sap and can cause distorted growth, weakened plants and reduced yields.

• Check plants regularly, particularly during late spring and early summer.
• Pinch out growing tips once the first pods have set.
• Encourage natural predators such as ladybirds, lacewings and hoverflies.
• Small infestations can sometimes be removed by hand or washed away with water.
• Avoid excessive nitrogen feeding, which can encourage soft growth attractive to aphids.

• Chocolate spot is a fungal disease that produces reddish-brown spots on broad bean leaves.
• In severe cases, spots merge, causing larger areas of damaged foliage and affecting stems and pods.
• The disease is particularly associated with cool, damp conditions and overcrowded plants.

• Space plants adequately to encourage airflow.
• Avoid prolonged leaf wetness where possible.
• Remove badly affected material and clear crop debris after harvesting.
• Practise crop rotation and avoid repeatedly growing broad beans in the same position.

• Rust causes orange-brown pustules on leaves and sometimes stems.
• It is often more noticeable later in the growing season.
• Severe infections can cause premature leaf loss and reduce the plant's ability to develop pods.

• Maintain good airflow around plants.
• Avoid overcrowding and remove heavily affected foliage where appropriate.
• Clear infected crop debris after harvesting.

• These small beetles feed on the edges of leaves, creating distinctive semicircular notches.
• Young plants may look badly damaged, but established broad beans can usually tolerate some feeding.

• Encourage healthy early growth.
• Protect young seedlings where damage is severe.
• In most cases, chemical control is unnecessary.

• Young broad bean seedlings can be vulnerable to slugs and snails, particularly during damp autumn and spring weather.
• Check plants regularly and use suitable wildlife-conscious control methods where necessary.

• Mice may eat newly sown seeds, while pigeons and other birds can damage emerging plants.
• Secure mesh or other suitable protection may be useful until seedlings are established.

Growing Broad Beans Through Winter

• Autumn-sown broad beans can tolerate a degree of frost, particularly when grown from hardy varieties.
• However, prolonged freezing conditions, strong winds and waterlogged soil can still cause problems.
• In exposed locations, horticultural fleece may provide some protection during severe weather.
• Check plants periodically throughout winter and replace any supports that have become loose.
• Avoid working the soil when it is saturated, as this can damage soil structure.
• Some winter leaf damage is normal, and plants may recover as temperatures rise in spring.
• If autumn sowings fail, there is usually still time to sow again in spring.
• When Are Broad Beans Ready to Harvest?
• Broad beans are generally ready to harvest from late spring through summer.
• Autumn-sown crops may begin producing in May or June, while spring-sown varieties often crop from June onwards.
• The exact timing depends on the variety, local conditions and sowing date.

How Do You Know When Broad Beans Are Ready?

• Pick regularly as pods reach the desired size.
• Hold the stem while removing pods to avoid damaging the plant.
• Harvest carefully, as broad bean stems can be relatively brittle.
• Use freshly picked beans promptly for the best flavour.
• If you want to save seed, leave selected pods on healthy plants until they have fully matured.

Storing and Freezing Broad Beans

• Freezing is one of the best ways to preserve a generous harvest.
• Remove the beans from their pods and blanch briefly in boiling water.
• Cool immediately in iced water, drain thoroughly and pack into suitable freezer containers or bags.
• Blanching helps preserve colour, flavour and texture.
• Frozen broad beans are excellent for soups, stews, risottos and vegetable dishes.

• Broad beans can also be dried for longer-term storage.
• Leave selected pods on the plants until fully mature and dry, then remove the beans and finish drying them thoroughly in a well-ventilated place.
• Store completely dry beans in airtight containers somewhere cool and dry.
• Dried broad beans need soaking and thorough cooking before eating.

Companion Planting and Crop Rotation

• Kale
• Spring cabbage plants
• Lettuce
• Chard
• Beetroot
• Autumn salads

Nutritional Benefits of Broad Beans

From Plot to Plate

• Sometimes the simplest preparation is the best.
• Cook freshly shelled broad beans until tender, then toss with butter, chopped mint and a little black pepper.
• Add a squeeze of lemon juice to bring out their fresh flavour.

• Combine cooked broad beans with crumbled feta, fresh herbs, lemon juice and olive oil.
• Add spring onions, peas or leafy greens for a colourful seasonal salad.
• This is an excellent way to make the most of the first broad bean harvest.

• Cook broad beans until tender and lightly crush them with olive oil, garlic, lemon juice and chopped herbs.
• Spread over toasted sourdough or other crusty bread.
• Finish with a little grated cheese or fresh mint.

• Broad beans work beautifully in risottos, particularly alongside peas, asparagus and fresh herbs.
• Add cooked beans towards the end of cooking to preserve their colour and texture.
• Finish with Parmesan, lemon zest and black pepper.

• Broad beans can be used to make a delicious alternative to traditional chickpea hummus.
• Blend cooked beans with tahini, garlic, lemon juice and olive oil until smooth.
• Serve with vegetable sticks, flatbreads or toasted bread.

• Broad beans add flavour, texture and protein to vegetable soups and stews.
• They work particularly well with potatoes, leeks, tomatoes and seasonal greens.