Summer Gardening UK: Water, Harvest and Sow for Winter

By the SoilCommander Editorial Team, under the guidance of Nitin Sharma, Co-Founder · · How we check our facts

On this page
  1. Steady water beats big soakings
  2. Little and often for salads
  3. Sowing for the cold months
  4. Blight season
  5. Pick, pick, pick
  6. Summer, month by month
  7. Summer questions
  8. Sources and further reading
  9. Put this season on paper
The short answer: summer (June to August) is harvest time in the UK, and also when next winter’s food is sown. Water steadily, because irregular watering splits roots and spoils tomatoes; keep sowing salads little and often; and from July sow for autumn, winter and spring. In late summer, keep an eye out for blight.
Trumpington Allotment Gardens in Cambridge in late July
An allotment in full summer growth. Photo: “Trumpington Allotment Gardens” by Mr Ignavy, CC BY-SA 2.0.

Steady water beats big soakings

A watering can among summer vegetables
Watering among summer crops. Photo: “Jardin Potager” by Alexandre Ultré, CC BY-SA 3.0.

Most summer problems trace back to the watering can. Irregular watering leads to blossom end rot in tomatoes and splitting in root vegetables.

Little and often for salads

A raised bed of young lettuces in rows
Rows of lettuce at different stages. Photo by Acabashi, CC BY-SA 4.0.

Leafy crops such as lettuce, beetroot, pak choi and radish can keep being sown through summer. A short row every couple of weeks gives a steady supply instead of a glut. In hot spells, salads do better in part shade: they need less water and are less likely to turn bitter. See lettuce.

Sowing for the cold months

Purple mizuna seedlings coming up in soil
Mizuna seedlings sown in late summer. Photo by Nadiatalent, CC BY-SA 4.0.

Mid to late summer is when crops for autumn, winter and spring are sown: spring cabbage, oriental leaves such as mizuna and pak choi, and winter salads. It feels strange to sow for winter in August, but these are the crops that will be cropping when nothing else is.

Blight season

A potato leaf with a late blight lesion
Late blight on a potato leaf. Photo by Björn Andersson (SLU), CC BY-SA 4.0.

Late summer is blight season: check tomatoes and potatoes often and remove infected leaves straight away. Our tomato and potato blight guide explains what to look for.

Pick, pick, pick

A bush tomato plant with fruit starting to ripen
Tomatoes beginning to ripen. Photo by Kolforn (Kolforn) I'd appreciate if you could mail me (Kolforn@gmail.com) if you want to use this picture out of the Wik, CC BY-SA 4.0.

Summer is about keeping up with the harvest. Beans, courgettes and tomatoes all come thick and fast now. See runner beans, courgettes and tomatoes.

Summer, month by month

An allotment in late August
An allotment in late August. Photo: “Allotment on Baths Road” by David Anstiss, CC BY-SA 2.0.

Summer questions

A raised bed full of courgette plants
Courgettes cropping in a raised bed. Photo by Kolforn (Kolforn) I'd appreciate if you could mail me (Kolforn@gmail.com) if you want to use this picture out of the Wik, CC BY-SA 4.0.
Why are my tomatoes going black at the bottom?

That is blossom end rot, linked to irregular watering.

What can I sow in August?

Crops for autumn, winter and spring: spring cabbage, oriental leaves and winter salads.

Sources and further reading

Facts on this page are summarised in our own words from the pages above; each is supported by at least two of them, or by one plus well-established growing science (noted in our research file). Every source was opened and checked on 23 October 2026.

Put this season on paper

Allotment planting calendar and layout pages inside the UK garden planner PDF
The UK Vegetable Garden Planner, printable PDF.

A season goes better when it is written down. Sketch what goes where in the free Vegetable Garden Layout Planner Tool, then keep sowing dates, harvests and notes for the whole year in the UK Vegetable Garden Planner (printable PDF). Every crop we cover is in the UK growing guides.

Last reviewed:

SoilCommander Editorial Team — under the guidance of Nitin Sharma, Co-Founder

Every growing guide is checked against RHS, USDA Cooperative Extension, and other named horticultural authorities before publishing. How we check our facts.

Relevant next steps

Match The Season To The Work

Seasonal jobs come down to timing, soil care, and keeping a simple record of what needs doing next.

UK garden plannerKeep seasonal jobs, sowing dates and harvest notes in one place. All growing guidesLook up any crop that is in season now. Planting CalendarSee what your region should be sowing and harvesting.

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Top tips for October
  • Plant garlic before hard frosts
  • Protect late salads with fleece
  • Store squash somewhere dry
  • Mulch empty beds
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