September is the month for reaping the rewards of your labours - lots of crops, such as runner beans, potatoes and raspberries are ready to harvest. But you can also sow seeds for future harvests.


The weather in September is often warm, so you'll need to keep watering - browse our guides to the best Hoses and best Hose Spray Guns, as well as our pick of the latest Water Butts and stylish Watering Cans. Check for hosepipe restrictions in your area, before use.

It's a time when you might have gluts of certain crops - find out about preserving your harvests and check out our round ups for great Apple Presses and Jam Making kit.

Here are some jobs you can get on with on the allotment in September.

Harvest crops

Oodles of crops are ready to harvest in September, including onions, potatoes, runner beans, courgettes, autumn-fruiting raspberries, tomatoes, apples and the last of the runner beans.

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Harvesting courgettes on the allotment
Harvesting a courgette with a knife

Sow veg

Now is time to start sowing the vegetables that will provide valuable winter harvests and earlier spring and summer pickings. You can sow leafy veg such as spring cabbages and spinach, winter salads, broad beans and peas for earlier harvests next spring, onions, shallots and garlic, and quick-growing crops such as turnips and radish.

Sowing broad beans in September
Sowing broad beans in individual slots of a seed tray

Sow a green manure

Now is a good time to sow a green manure, such as grazing rye or phacelia, over any earth that is going be left bare over winter - it will suppress weeds and will add nutrients when dug into the soil in spring. Find out how to improve the soil with green manure.

Sowing green manure
Sowing green manure seeds over bare earth
  • Buy green manure seeds from Suttons.

Watch out for wasps

Wasps can be a real pain at this time of year, feasting on the juices of split fruits. To minimise damage, pick fruits as soon as they are ripe, and pick up any fallen ones. Try to keep birds of crops such as apples and pears, which can be pecked at by birds, attracting wasps afterwards.

Wasp on a plum
A wasp eating a ripe plum