How to sow broad beans indoors

How to sow broad beans indoors

Follow our step-by-step guide to sowing broad beans indoors in February, for planting out in spring.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
To do
To do

Do To do in January

Do To do in February

Do not To do in March

Do not To do in April

Do not To do in May

Do not To do in June

Do not To do in July

Do not To do in August

Do not To do in September

Do not To do in October

Do not To do in November

Do not To do in December

Broad beans are simple to grow and one of the earliest crops for harvest in late spring. They’re versatile too – shell the pods for the beans, eat the immature pods whole or steam or stir-fry the leafy tops.

If you live in a cold area, have heavy or waterlogged soil, or have a problem with mice (which love the seeds), then it’s a good idea to sow them in deep pots or modules. Place in a cool, frost-free place, such as a cold frame or unheated greenhouse, and they’ll germinate within three weeks.

After around six weeks, the roots will have filled their pots, and the seedlings will be ready to harden off and plant out. Plant broad beans in well-drained soil that has had plenty of organic matter incorporated. Space at around 25cm apart and give them a sturdy support.

Get ahead and start your own crop of tasty broad beans, in just four simple steps.

Plant broad beans in well-drained soil that has had plenty of organic matter incorporated.
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You Will Need

  • Broad bean seeds
  • Seed compost
  • Seed trays or modules

Step 1

Fill deep pots or modules with seed compost. It’s important to use deep pots, as broad beans develop long roots.

Filling seed modules with compost
Filling seed modules with compost

Step 2

Use your finger to push a single bean seed, on its edge, into the top of each module. Then cover the seed with a little extra compost – the seed should be about 5cm deep.

Planting broad bean seeds
Planting broad bean seeds

Step 3

Water, soaking the compost thoroughly. Stand the Rootrainers or pots in a cool but frost-free, sheltered place, such as a cold frame, unheated greenhouse or cool windowsill.

Watering the seed modules
Watering the seed modules

Step 4

Once the roots have filled the pots, harden off the plants by standing them outside during the day but bringing them under cover at night. Soak the compost before planting out.

Broad bean plants with roots exposed
Broad bean plants with roots exposed
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Look out for aphids

Keep an eye out for aphids, which eat the young, soft shoot tips. Pinch out the tender shoot tips once the first flowers appear, to deter them.

Wooden garden trug