August is one of the busiest harvest months in UK vegetable gardens and allotments. Courgettes, beans, tomatoes, cucumbers and sweetcorn can provide regular pickings, while blackberries, raspberries, blueberries and plums bring plenty of fresh fruit.
Some crops need checking every few days, while onions, shallots and potatoes may be reaching maturity for storage. Harvest times depend on variety, weather, location and whether plants are grown outdoors or under protection.
For a year-round overview, see our UK Harvest Calendar.
August Harvest at a Glance
August brings a wide selection of summer vegetables and fruit, alongside crops reaching maturity for storage.
| Crop group | What may be ready | August conditions |
|---|---|---|
| Summer vegetables | Courgettes, French beans, runner beans, cucumbers, tomatoes, sweetcorn | Productive plants; outdoor ripening varies |
| Roots, potatoes and alliums | Carrots, beetroot, turnips, second early potatoes, onions, shallots | Mature crops; some maincrop potatoes ready late August |
| Leafy crops and brassicas | Chard, kale, lettuce, calabrese, summer cabbage, cauliflower | Established plants and suitable varieties |
| Soft fruit | Blackberries, autumn raspberries, blueberries, late summer raspberries | Established fruiting plants |
| Tree fruit | Plums, gages, early apples, early pears | Early-ripening varieties |
| Summer herbs | Basil, mint, parsley, chives, coriander, dill, oregano, thyme, rosemary | Healthy growth; watch for bolting |
| Protected harvests | Peppers, chillies, aubergines, tomatoes, cucumbers | Generally more dependable under protection |
| Conditional fruit | Damsons, figs, late strawberries, remaining currants and gooseberries | Suitable varieties and favourable conditions |
Sheltered gardens and greenhouses may crop earlier than exposed or northern allotments. Check individual crops for maturity rather than relying entirely on the calendar.
What Vegetables Can You Harvest in August?
Browse the crop groups below for August-specific advice, with links to the relevant harvesting or growing guides.
Courgettes, French beans and runner beans can provide frequent August harvests. Tomatoes and cucumbers are also productive, particularly under protection, although outdoor crops may be later in cooler areas.
Sweetcorn may also be ready during August, although individual cobs should be checked for maturity before picking. Check courgettes and beans regularly to prevent them becoming oversized.
Established root crops and second early potatoes can provide useful August harvests. Some maincrop potatoes may also be ready towards the end of the month, although others need longer.
Onions and shallots should be checked for mature bulbs and naturally collapsing foliage. Healthy crops intended for storage need proper drying, while maincrop potatoes should develop firm skins before long-term storage.
Established chard and kale can provide usable leaves throughout August, while lettuce needs closer attention during hot weather to prevent bolting and bitterness.
Calabrese should be harvested while its flower buds remain tightly closed. Summer cabbage and cauliflower may also be ready, depending on variety and planting date.
Fruit to Harvest in August
Blackberries, Raspberries and Blueberries
August is a productive month for UK soft fruit. Blackberries become increasingly available, while autumn-fruiting raspberries begin ripening and some late summer-fruiting varieties continue cropping.
Established blueberry bushes can also provide regular harvests as berries reach their full colour and flavour.
Pick ripe fruit regularly, removing damaged or mouldy berries.
For growing advice, see our How to Grow Raspberries in the UK guide.
Plums, Gages, Early Apples and Pears
Many plum and gage varieties ripen during August, alongside early apples and some early pears.
Early pears may be picked while mature but still firm, allowing them to finish ripening indoors. Apples and plums should be harvested according to their variety and signs of ripeness.
Some early damsons, figs and late strawberries may also be available, although many damsons and main-season apples and pears are harvested later.
Fresh Herbs and Protected Harvests
Fresh August Herbs
Established basil, mint, parsley, chives, oregano, thyme and rosemary can provide regular August pickings.
Coriander and dill may flower and set seed during warm weather, reducing the supply of tender leaves. Mature seeds can also be collected for culinary use.
Harvest healthy shoots regularly without cutting established plants back excessively.
Greenhouse and Polytunnel Harvests
August is a productive month for greenhouse and polytunnel crops.
Tomatoes and cucumbers can provide regular harvests, while peppers, chillies and aubergines may also be producing usable fruit.
Some peppers and chillies can be harvested before reaching their final colour, depending on variety and intended use.
Outdoor crops may also be productive in warm, sheltered gardens, although protected growing remains more dependable in cooler UK conditions.
What Should You Harvest or Leave Growing?
August brings plenty of crops to harvest, but some vegetables still need time to develop. Others may be ready to eat without being mature enough for long-term storage.
- Harvest now: Productive courgettes, ready beans, ripe tomatoes and sweetcorn, mature roots, ripe berries, second early potatoes and onions or shallots showing signs of maturity.
- Leave developing: Immature sweetcorn, green tomatoes, unripe apples and pears, later maincrop potatoes and vegetables that haven’t reached harvesting size.
- Not ready yet: Most pumpkins, winter squash, parsnips, Brussels sprouts and winter brassicas generally need more growing time.
For sweetcorn, brown, drying silks are a sign to start checking. Pierce a developed kernel: creamy liquid indicates readiness, while clear liquid means the cob needs longer.
Ready to eat doesn’t always mean ready to store. Some potatoes, onions and shallots are suitable for immediate use before they have matured or dried sufficiently for longer storage.
What to Do After Harvesting
As early potatoes, exhausted salads and crops that have finished producing are cleared, make use of the available growing space. Leave healthy beans, courgettes and tomatoes in place for as long as they continue producing.
Suitable late summer and autumn vegetables can still be established, depending on local conditions.
For planting ideas, see our Summer Vegetable Planting Guide UK.
You can also use the Allotment Planner to organise replacement crops and available beds.
August harvests can produce more than you can eat fresh. Surplus beans, courgettes, tomatoes and soft fruit can be frozen, preserved or shared while still in good condition.
Looking ahead? See What to Harvest in September UK for next month’s potential harvests.
FAQs: What to Harvest in August UK
Courgettes, French beans, runner beans, tomatoes, cucumbers, sweetcorn, carrots, beetroot and turnips are among August’s main vegetables. Second early potatoes, onions, shallots and suitable summer brassicas may also be ready.
Blackberries, autumn-fruiting raspberries, blueberries, plums, gages and early apples are among August’s main fruits. Some early pears, figs, late strawberries and damsons may also be ready, depending on variety and location.
Sweetcorn is usually ready when the silks are brown and dry and a developed kernel releases creamy liquid when pierced. Clear liquid indicates the cob needs longer, while thick, doughy contents suggest it is over-mature.
Some early-maturing maincrop varieties can be ready towards late August, but many remain in the ground until September or October. Potatoes intended for storage should have mature, firm skins that resist rubbing off easily.
Mature onions and shallots generally develop yellowing foliage that begins collapsing naturally. Check that bulbs have developed properly before lifting them, then dry healthy bulbs thoroughly before long-term storage.
Cool weather, limited sunshine, later planting and slower-ripening varieties can delay outdoor tomatoes. Healthy plants may continue ripening through August and into September, particularly when conditions remain warm and sheltered.
