Tipping seeds out of a packet into the palm of a hand

Vegetable seeds to sow in September

September is a good time to sow veg seeds for winter and spring, including leafy crops, autumn onions and broad beans.

September is harvest time, but it’s also time to plan ahead and start sowing the vegetables that will provide valuable winter harvests and earlier spring and summer pickings.

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In autumn the soil is still warm, so seeds will germinate quickly. If the weather is still fine, the growing season can continue for several weeks.

Browse our list of vegetables you can sow in September, below.


Leafy veg

Veg to sow in September - spring cabbages
Veg to sow in September – spring cabbages

Spring cabbages and spinach can be sown now for pickings next spring. You will need to cover the spinach with fleece from October onwards.

Buy spring cabbage seeds from Dobies

Buy spinach seeds from Waitrose Garden


Salad crops

Veg to sow in September - mizuna lettuce leaves
Veg to sow in September – mizuna lettuce leaves

There’s still time to sow salad crops to harvest in the coming weeks. Sow in a sheltered spot outdoors, or grow in pots. Try mustard leaf, winter salad mixes, mizuna or mibuna. Winter lettuces such as ‘Winter Density’ can be sown under glass. Discover winter salads to grow.

Buy mizuna seeds from Waitrose Garden

Buy mibuna seeds on Amazon 

Buy winter lettuce ‘Winter Density’ from Primrose


Broad beans and peas

Veg to sow in September - broad beans
Veg to sow in September – broad beans

Sowing broad beans in autumn means plants can establish over winter and crop earlier next spring. Broad beans and peas are hardy, but it’s advisable to cover plants with fleece during hard frosts or snow. Try broad bean ‘Aquadulce Claudia’ or pea ‘Feltham First’.

Buy broad bean seeds from Suttons

Buy seeds of pea ‘Feltham First’ on Amazon


Radish

Veg to sow in September - radishes
Veg to sow in September – radishes

Radishes mature in just a couple of weeks, so it’s worth sowing a late batch of seeds now, for a late crop.

Buy radish seeds from Suttons


Turnip

Veg to sow in September - turnips
Veg to sow in September – turnips

Turnips are another fast-growing crop that can be sown on bare soil in September – they do best in cool, moist conditions. Harvest as golf-ball sized, baby veg in around six weeks. Perfect for the Christmas table.

Buy turnip seeds from Dobies


Onions, shallots and garlic

Veg to sow in September - onions
Veg to sow in September – onions

Planting onion sets in autumn means you will get an earlier crop next year. Choose a variety that’s ideal for autumn sowing, such as ‘Troy’ or ‘Radar’. Garlic can be sown any time between now and spring. Find out how to grow onions, shallots and garlic.

Buy onion sets for autumn planting from Suttons

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Buy garlic sets from Suttons