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How to grow sweetcorn

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 seedlings to plant now and grow them in a block on the veg plot. Or use them decoratively, planting them in large pots or growing them as exotic-looking crops in borders.

You will need

  • Sweetcorn seeds or plants
  • Modular seed trays and multi-purpose compost if raising from seed
  • Dibber or pencil
  • Trowel
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Total time:

Step 1

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

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Step 2

After germination, wait until the roots of seedlings have reached the base of the seed tray cell before planting out. Long, root-training modules such as this (see picture) encourage longer root development. Water the compost well before planting out.

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Step 3

Using a garden trowel, plant seedlings into well-prepared ground, ensuring that the top of the compost ends up level with the surrounding soil surface. Plant in a block rather than in long rows because sweetcorn is wind pollinated.

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Step 4

Sweetcorn works well grown in large containers 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.