How to grow sweetcorn

How to grow sweetcorn

Find out how to grow sweetcorn from seed and young plants, in our practical, how to guide.

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

Plant is not at its best in January

Plant is not at its best in February

Plant is not at its best in March

Plant is not at its best in April

Plant is not at its best in May

Plant is not at its best in June

Plant is not at its best in July

Plant is at its best in August

Plant is not at its best in September

Plant is not at its best in October

Plant is not at its best in November

Plant is not at its best in December

To do
To do

Do not To do in January

Do not To do in February

Do not To do in March

Do not To do in April

Do To do in May

Do 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

Nothing beats the taste of freshly-picked sweetcorn in late summer, and growing your own couldn’t be easier. Sow your own seeds or buy young sweetcorn seedlings to plant now and grow them in a block on the veg plot.

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You Will Need

  • Sweetcorn seeds or plants
  • Seed trays or modules
  • Pencil or dibber
  • Trowel
  • Multi-purpose, peat-free compost

Step 1

Sowing sweetcorn seed
Sowing sweetcorn seed

If growing your sweetcorn from seed, fill modular seed trays with peat-free multi-purpose compost. Sow a single seed in each, pushing it just under the surface. Water well.

Step 2

Sweetcorn roots growing in modules
Sweetcorn roots growing in modules

After germination, wait until the roots of seedlings have reached the base of each seed tray cell before planting out. Long, root-training modules (pictured) encourage longer root development.

Step 3

Planting out sweetcorn
Planting out sweetcorn

Water the compost well before planting out. Then, using a garden trowel, plant seedlings into well-prepared ground, ensuring that the base of the stem is level with the surrounding soil surface. Sweetcorn is wind pollinated, so plant in blocks, rather than rows.

Step 4

Sweetcorn growing in a container
Sweetcorn growing in a container

Sweetcorn can work well planted in a large container filled with multi-purpose compost. Grouped with other container veg they make an attractive feature in their own right.

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Sweetcorn plants grow very tall, so take care not to position them where they will shade neighbouring veg plants.

Boots. Photo: Getty Images.