What to Plant in June in the UK: A Weekend Family Gardening Guide

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June is the month the UK garden finally hits its stride. The borders look like the back of a seed catalogue, the salads come on faster than you can eat them, and — if you haven’t sown a single thing yet — there is still plenty of time to catch up before the schools break up. June is also, quietly, the best month of the year to garden with children. The seeds come up in days rather than weeks, you can sow on Saturday and harvest on the next, and almost everything you put in the ground will reward a six-year-old’s attention span before the holidays start.

This guide pulls together what to plant in June in a UK family garden, the jobs that actually matter, and the projects that work brilliantly with children. We’ve grouped the work by how much time you’ve got — 30 minutes, a Saturday morning, or a proper weekend — so you can dip in for what fits. If you’re starting later in the month, scroll to the quick-wins section for the crops that will still finish in time for the school holidays.

Vegetables to plant in June (UK)

June is the second-chance month. Anything tender that didn’t go in during May can still be sown direct now — and a few crops actually prefer the warmer soil. The trick is to keep sowing little and often, so something is always coming through.

Direct sow into the ground

French beans (dwarf and climbing) — the soil is warm enough for direct sowing from the start of June. Two seeds per station, thin to the strongest.
Runner beans — see the dedicated section below; this is the best family project of the month.
Courgettes, marrows and pumpkins — pop two seeds at the base of each cane, water in, watch them gallop. One plant per family member is plenty.
Sweetcorn — sow in a block (not a row) so the pollen finds the silks. Aim for a 60 cm grid.
Carrots — sow short rows every fortnight for a constant supply. ‘Nantes’ and ‘Amsterdam’ are the kid-friendly classics; thin to a finger’s width.
Beetroot — ‘Boltardy’ is forgiving and earthy-sweet. Two or three seeds per station, leave them all (each “seed” is actually a cluster).
Peas — early-summer sowings can still crop before the August dry sets in. ‘Kelvedon Wonder’ is the reliable one.
Spring onions — quick and easy; sow thinly in a short row every three weeks.

The catch-up crops — plug plants instead of seed

If you didn’t get tomatoes, peppers or chillies into pots in April, do not waste June trying to grow them from seed. Buy plug plants from a garden centre or a local nursery — for the price of a punnet you get a head start of six weeks. Pot them on into 5-litre containers, feed weekly once the first yellow flowers drop, and you’ll be eating fruit by mid-July. The same goes for courgettes, cucumbers and aubergines.

Winter crops — plant now, eat in the hungry gap

The least exciting jobs in the June garden pay back the most. Sow these now for harvests when the supermarket shelves are at their worst:

Purple sprouting broccoli — sow in modules now, plant out in July, eat in February and March.
Winter cabbage and kale — ‘January King’ and ‘Cavolo Nero’ both want a long growing season.
Leeks — pencil-thin plants planted out in July reward you in November.
Maincrop carrots for autumn lifting and winter storage.

Quick wins — fast crops kids can harvest in weeks

This is the heart of family gardening in June. These crops germinate in days, sit happily through the school week, and give the children something concrete to eat before they lose interest. Every one of them will fit in a pot, a window box or a builder’s bucket if you’ve no garden bed to spare.

Radishes — 21 to 28 days from sowing to plate. ‘French Breakfast’ is the prettiest. The single most reliable first crop a child will ever grow.
Salad leaves — cut-and-come-again mixes (mizuna, mibuna, oak-leaf lettuce, rocket) are ready in 2 to 3 weeks. Sow a short row every fortnight and you’ll never need a supermarket bag again.
Rocket — peppery, fast, almost magical for a sceptical seven-year-old. Sow direct, water lightly, thin once.
Pea shoots — sow a tray of marrowfat peas thickly, snip the shoots at 10 cm, they regrow once or twice before giving up. Sweet and crunchy in sandwiches.
Coriander and dill — the children will eat what they would otherwise refuse if it has come off “their” herb plant.
Strawberries — late-fruiting varieties like ‘Florence’ are still in the garden centres in early June. Plant into a hanging basket or a trough; the children patrol them like guard dogs from then on.

Container-first — no garden, no problem

If you’re working with a patio, a balcony or a row of pots by the back door, June is the easiest month to start. Lettuce, radish, rocket, dwarf French beans and strawberries all crop happily in containers the size of a washing-up bowl. The pots dry out faster than open ground, so a daily check with a finger pushed into the compost is the only routine you really need. Recycled yoghurt pots make excellent seedling cells; ice-cream tubs work as drip trays; old colanders drain perfectly for a herb planter.

Flowers to sow and plant in June

The June flower job is mostly about late-summer colour and next year’s display. Two distinct sowings, both quick:

Hardy annuals for August and September

Calendula (pot marigold) — sow direct, germinates in a week, in flower by early August. The petals are edible — drop a few on a school-holidays salad and watch the table react.
Nasturtium — large seeds the children can sow themselves. Flowers, leaves and seeds are all edible (the seeds taste a bit like capers).
Nigella (‘Love-in-a-mist’) — sky-blue flowers, lantern-shaped seed-heads for autumn arrangements.
Cosmos — sow direct now for waist-high flowers until the first frost.
Sunflowers — large seeds, fast germination, a metre tall by the August holidays if the slugs let them through. Mark each child’s plant with a name-label and start a height chart on the kitchen wall.

Biennials for next year

The greatest trick a gardener can pull on a sceptical visitor is to point at a wall of foxgloves in May and admit, mildly, that they were sown the previous June. The plants are tiny now and obvious by September. Sow into modules or a spare seed-bed:

Foxgloves — ‘Sutton’s Apricot’ or the native Digitalis purpurea.
Wallflowers for spring scent at the front door.
Sweet williams — the children love the freckled faces.
Honesty for the silvery seed-pods at Christmas.

Herbs and a word on geraniums

If you’ve never grown herbs at home, June is the month to start. Supermarket herbs are expensive and you never have the one you actually need; a £3 pot of basil on a sunny kitchen sill solves the problem for two months. Sow or buy plug plants of basil, parsley, coriander, dill and chives — they all crop within four to six weeks. Walking around the garden with the children, brushing leaves between fingers and asking them to guess which is which, is one of those quiet things that turns into a habit.

If you brought geranium (pelargonium) pots into the shed or garage over winter, June is when they pay you back. Move them out fully into the sun, feed weekly with a tomato fertiliser, deadhead the spent flowers, and they will throw colour right through to October. They are the most forgiving plant in the garden and a brilliant first-pot for a child.

The runner-bean project — June’s best activity with kids

This is the project we come back to every year. Runner beans have everything a child wants from a plant: huge speckled seeds the size of a 50p piece, fast germination (a week, sometimes less), and growth so visible you can measure it day by day. Twenty millimetres a day, give or take, in the warm weeks of June.

How to do it as a weekend job

Saturday morning: sow the seeds. If you’ve not started them off indoors, sow direct into the ground at the base of each cane — two seeds per station, 5 cm deep, water in.
Build the wigwam. Six 2.4 m canes, pushed in around a 60 cm circle, tied at the top with string. The children can do all of this once you’ve started the first cane off. If space is tight, lean four canes against a fence in a fan shape.
Start the height chart. Stick a metre rule into the ground next to one plant; the child marks the height each weekend in a different coloured pen. A side-by-side comparison with a sibling’s plant is the closest thing to free entertainment a garden offers.
Slug patrol. Young runner beans are slug bait. Copper rings, beer traps or a sharp evening tour with a torch (the slugs come out after dusk, the children think this is brilliant) all work.
Pick early and often. Once they start cropping in late July, pick beans when they’re young and pencil-thin — the plants keep producing for as long as you keep picking.

The classic varieties are ‘Scarlet Emperor’ and ‘Painted Lady’, but a packet of any modern variety will work. Our long write-up of an Easter runner-bean session with the children covers the early-stage sowing in more detail.

June garden jobs — by how much time you have

The June garden largely looks after itself if four or five small jobs tick over each week. We bucket them by time so a thirty-minute window after work counts for something.

Quick wins (30 minutes)

Feed tomatoes once the yellow flowers have dropped and the first green tomatoes are visible. A weekly liquid feed (any tomato fertiliser) is the difference between a handful of fruit and a glut. For the full method, see our beginner’s guide to growing tomatoes for a bumper crop.
Pinch out tomato side-shoots on cordon varieties — the little leafy growth in the V where a leaf meets the stem.
Deadhead roses, geraniums and bedding plants. The plant’s job is to set seed; your job is to convince it that hasn’t happened yet so it keeps flowering.
Water deeply, not often. A good soak twice a week beats a daily sprinkle. Water at the base of the plant, ideally in the early morning or after sunset.
Slug patrol at dusk with a torch and an old jam jar. Five minutes a night saves you a row of seedlings a week.

A Saturday morning (2-3 hours)

Tidy daffodil and tulip foliage. Once the leaves have gone yellow and limp — and not before — cut them right back. If they’re still green, leave them be; they’re feeding next year’s bulb.
Clip evergreen hedges. Box, privet and yew are in active growth and respond well to a trim. Net the hedge bottom with a tarp; the children can do the sweeping up.
Lift the first early potatoes. Anything planted in March will be ready about ten weeks on. Loosen with a fork rather than a spade, let the children rummage. Wash, boil for fifteen minutes, eat with butter.
Earthing-up maincrop potatoes — draw soil around the stems to protect the tubers from light (which turns them green and inedible).
Tie in climbers — sweet peas, clematis, climbing roses, runner beans. Soft string, loose figure-of-eight knots.

A full weekend project

Build a strawberry tower or raised bed — old pallet, four boards from a builder’s merchant, an afternoon’s work.
Plant out tender crops — courgettes, sweetcorn, runner beans, pumpkins — properly, with manure or compost worked into the planting hole.
Take semi-ripe cuttings of pelargonium, lavender and hebe for free plants next spring.
Net the soft fruit. Blackbirds will strip a strawberry bed in a day. Drape fine netting over a few canes; the children can be in charge of the corners.

A note on timing — south vs north UK

Most of this guide assumes a southern English garden. If you’re north of Yorkshire, knock a week off the start of every sowing window and add a week to anything described as “tender”. Scottish gardeners should treat anything labelled “direct sow June” as a mid-June job at the earliest, and keep cloches and fleece to hand into the first week of July. The further north you are, the more value there is in starting plug plants on a windowsill rather than from seed in the ground.

Gardening with the kids in June — five projects that work

June is the most rewarding month of the year to garden with children because the growth is fast enough to hold their attention. Five projects we come back to each year:

The runner-bean race. See above. Measure weekly, record on the kitchen wall, declare a winner on the first day of the school holidays.
The radish promise. Sow on a Saturday morning, harvest before the end of June. The fastest pact a parent can make with a sceptical child.
Edible flowers for a tea-party plate. Nasturtium, calendula and pansy petals scattered over a salad or a cake. The children pick them; the cake is decorated; nobody refuses dinner.
The sunflower height chart. One plant per child, a Sharpie, the kitchen door frame. Last year’s record in our family was 2.4 m. We’d love to see one of yours go higher.
The strawberry patrol. Once the first berries flush red, the children take it in turns to check at breakfast. They eat what they pick. There is no quicker route to a child preferring fruit over biscuits.

If you’re after more, our kids’ gardening guide for May half-term works year-round, our July guide picks up the school-holiday baton, and the August equivalent moves on to autumn planting.

When it goes wrong (it always does)

It’s worth saying out loud, because most gardening guides leave it out: things will go wrong in June. The slugs will get the lettuce in one rainy week. The cat will lie on the seedlings. The runner bean a five-year-old “planted upside down” will not come up. The tomato pot will fall off the windowsill. None of this is a sign you’ve done it wrong; it’s the standard cost of a family garden in motion.

Resow the slug-hit row the same evening. Move the seedling tray to a higher shelf. Buy a plug plant to replace the lost tomato. The garden forgives almost everything in June.

Frequently asked questions

Is it too late to plant vegetables in June in the UK?

No — June is the second-chance month. French beans, sweetcorn, courgettes, carrots, beetroot, lettuce and radishes can all still be sown direct, and you have the entire summer ahead to grow them on. If you didn’t get tomatoes or peppers going in spring, buy plug plants rather than sowing from seed.

What can children actually harvest within a month?

Radishes (three to four weeks), salad leaves (two to three weeks for cut-and-come-again), pea shoots (a fortnight) and rocket are the four reliable quick wins. Late-fruiting strawberry plants bought in early June will also crop before the school holidays start.

Can I plant vegetables in containers on a patio in June?

Yes — lettuce, radish, rocket, dwarf French beans, herbs, strawberries and even courgettes (one plant per 35-litre pot) all crop well in containers. Patio pots dry out faster than open ground, so a daily check with a finger pushed into the compost is the only routine you really need.

What flowers can I sow in June that will bloom this year?

Direct-sow calendula, nasturtium, nigella and cosmos in early June and you’ll have flowers from August right through to the first frost. Sunflowers will be in flower by late August. Anything sown later in the month should be limited to the fastest hardy annuals (calendula, nasturtium) for a hope of summer colour.

Should I sow seeds or buy plug plants in June?

Both. Sow direct for everything that grows quickly from seed (beans, courgettes, carrots, salads, sunflowers). Buy plug plants for crops that needed a head start in spring and didn’t get one — tomatoes, peppers, chillies, aubergines, cucumbers. Plug plants cost more, but the time saved is worth it.

Can I sow winter vegetables in June?

Yes, and this is the most-skipped job of the month. Sow purple sprouting broccoli, kale, winter cabbage and leeks now in modules, plant out in July, and you’ll be harvesting from October right through to next April. They are the crops that fill the hungry gap when supermarket shelves are at their worst.

Plan for the month ahead

If June was the catch-up month, July is the harvest one. By then the lettuce is bolting, the courgettes are silly, the strawberries are in, and the August preparations are about to begin. Our companion guides — May half-term for the back-end of spring, July for the harvest peak, and early August for the start of the autumn garden — pick up the rest of the seasonal cluster. And if you’re after something to do now, our how to start a compost heap guide is the highest-leverage one-hour weekend project for any family garden, in any month.

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