Harvest begins in earnest. There is still time to sow for winter.

The month ahead

July is when the garden gives back. Harvesting is daily now ; courgettes, peas, beans, early potatoes, salad and soft fruit all need picking regularly, and the more you pick, the more the plants produce. Leave a courgette to become a marrow and the plant will stop. Pick beans every other day; they get tough and stringy if you let them linger.

A hand picking slender green French bean pods into a wooden trug, with climbing bean plants and canes behind
Pick every other day. Beans left too long on the plant turn tough and stringy.

It is also the month to sow for winter. Kale, autumn salad, spring cabbage, turnips and oriental leaves all go in now. Feed hungry fruiting crops weekly ; tomatoes and courgettes especially are drawing nutrients out of the soil faster than you think. Keep watering consistently; erratic watering is what splits tomatoes and makes carrots fork.

What to do in July

Sow indoors

Under cover: windowsill, heated propagator or greenhouse.

Sow outdoors

Direct into prepared ground (or under a cloche/fleece where noted).

Plant out

Move transplants, sets, tubers or cloves into their final spot.

Harvest

Ready to pick or lift this month (windows are approximate).

Fruit & herbs

Pick raspberries and currants as they ripen. Net against birds if needed ; a blackbird can strip a row of raspberries in an afternoon. Take cuttings of herbs like rosemary and sage now; softwood cuttings taken in summer root faster than any other time of year. Check apple trees for codling moth and hang pheromone traps if you had maggoty apples last year. Start ordering autumn onion sets and garlic now ; the best varieties sell out early.

Under cover

Ventilation, ventilation, ventilation. Open doors and vents first thing and close them in the evening if nights are cool. Water the soil in the morning, never the leaves, and never in the evening ; foliage that stays wet overnight is an invitation to disease. Damp down the greenhouse floor on hot days to raise humidity without wetting the plants.

Key jobs in July

  • Harvest courgettes, peas, beans, early potatoes, salad and berries regularly; daily picking keeps them producing.
  • Sow autumn and winter crops: kale, autumn salad, spring cabbage, turnips, oriental leaves.
  • Ventilate greenhouses and polytunnels hard. The single most important job this month.
  • Feed hungry fruiting crops (tomatoes, courgettes) weekly and keep watering.
  • Keep on top of blight inspection: remove and bin any blighted potato foliage immediately.
  • Pick raspberries and currants as they ripen; net against birds if needed.
  • Dead-head flowers to keep them blooming and water containers daily.
  • Take cuttings of herbs like rosemary and sage for new plants.
  • Check apple trees for codling moth and hang pheromone traps if needed.
  • Start ordering autumn onion sets and garlic for planting in September.

The Scottish picture this month

High summer: warm, often wet, and humid. Excellent for cropping but the peak of the blight, mildew and grey-mould watch, especially under cover where airflow is poor.

Frost: Frost-free everywhere: the longest frost-free stretch of the year.

Region-aware toolFrost Date CalculatorYour local last and first frost bands: the single most useful number for timing everything above.

Watch out for

Vine weevil (adults)

Adults notch leaf edges through summer. The adult stage is recorded as a summer season rather than exact months.

Mint rustbroad seasonal window

Symptoms can appear from spring until autumn. Cut affected mint to the ground and never propagate from infected plants.

Timing is broad, close to "the whole growing season", so treat it as a standing watch rather than a monthly alert.

These problems track the weather, not the calendar. Their month-by-month activity isn't sourced, so we tie them to the conditions that trigger them rather than pretend a date:

Potato & tomato blight

Watch when: warm, humid, muggy spells in the main growing season

June onwards for the UK; Scottish onset not separately sourced, so we tie it to the weather. Watch potatoes and outdoor tomatoes after warm, wet spells.

Grey mould (botrytis)

Watch when: cool, damp, still air, especially under cover

Can occur year-round with latent infections; ventilation and airflow are the real controls. Peaks when growth is soft and air is stagnant.

Powdery mildew

Watch when: dry spells and drought stress at the roots

Driven by dry, warm weather and plants short of water. Keep roots watered and airflow open around courgettes and peas.

Leek rust

Watch when: warm, wet summers with poor airflow

A wet-summer disease that is genuinely more of a Scottish problem than the allium insects. Space alliums generously; driven by leaf wetness, not a date.

Sources
  • RHS: grow-your-own guides: sowing, planting and harvest timing for all 25 crops (each window hand-derived from the crop's own RHS prose)
  • GrowScotland: pest activity framing: which pests to flag each month is our own reading of RHS activity data. We surface only what RHS sources, and frame weather-driven diseases by trigger conditions rather than inventing a Scottish calendar