What Vegetable, Flower, Herb and Fruit Seeds Can You Sow in June in the UK?

June is one of the most rewarding months in the UK gardening calendar. The soil has warmed, the days are long, and in most areas the risk of frost has passed, which means a wide range of seeds can be sown directly outdoors. Whether you have a vegetable patch, a few patio pots, a cottage-style border or a greenhouse, June still offers plenty of opportunities to grow food, colour and fragrance for the months ahead.

Vegetable Seeds to Sow in June

June is ideal for successional sowing: planting small batches every couple of weeks so you avoid gluts and keep harvesting for longer. Leafy crops are especially useful now, but there is also still time for beans, roots and some autumn crops.

·        French beans and runner beans: Sow directly outdoors in warm, prepared soil. Runner beans will need a sturdy support frame or wigwam.

·        Beetroot: Sow every two to three weeks for tender roots and young leaves.

·        Carrots: Choose quick-maturing varieties and sow thinly to reduce the need for thinning.

·        Lettuce and salad leaves: Sow little and often in partial shade to help prevent bolting in hot weather.

·        Rocket, mizuna and mustard leaves: These germinate quickly and are useful for cut-and-come-again salads.

·        Radish: One of the fastest crops to sow in June, often ready within a few weeks.

·        Spring onions: Sow in drills for late-summer and autumn use.

·        Pak choi: Sow later in June or in partial shade, as hot dry conditions can encourage bolting.

·        Kohl rabi and turnips: Good choices for a quick autumn crop.

·        Courgettes, pumpkins and squash: In milder or southern areas, early June is the last realistic window for direct sowing outdoors.

·        Sweetcorn: Sow in blocks rather than rows, ideally early in the month, to help pollination.

Flower Seeds to Sow in June

June is a brilliant bridge month for flowers. You can still sow some quick annuals for colour later this summer, while also starting biennials and perennials that will flower next year.

·        Nasturtiums: Easy to sow directly into borders, pots or vegetable beds, and their flowers are loved by pollinators.

·        Calendula: A cheerful hardy annual that can still flower later in the season.

·        Sunflowers: Sow early in June for fast growth and late-summer impact.

·        Nigella: Scatter seed into sunny gaps for delicate blue, white or pink flowers.

·        Clarkia and godetia: Good for quick, colourful annual displays.

·        Limnanthes: Also known as poached egg plant, it is useful for attracting beneficial insects.

·        Wallflowers: Sow now for spring colour next year.

·        Foxgloves: Sow in trays or a seedbed for flowering next summer.

·        Sweet William: A classic biennial to sow now for scented flowers next year.

·        Canterbury bells: Sow in June for cottage-garden flowers the following year.

Herb Seeds to Sow in June

Warm soil and long daylight hours make June a good month for sowing herbs, especially in containers where you can keep compost evenly moist. Many herbs will crop quickly if you pick leaves regularly and avoid letting plants dry out.

·        Basil: Sow in pots in a warm, sheltered spot or greenhouse; keep it protected from chilly nights.

·        Coriander: Sow little and often, ideally in partial shade, as it can run to seed quickly in heat.

·        Dill: Direct sow where it is to grow, as it dislikes root disturbance.

·        Parsley: Sow in modules or pots; it can be slow to germinate, so keep compost consistently moist.

·        Chervil: Best sown in light shade for delicate, aniseed-flavoured leaves.

·        Chives: Sow in pots or clumps for a reliable perennial herb.

·        Fennel: Sow herb fennel for feathery leaves, or Florence fennel for swollen bulbs later in the season.

Fruit Seeds to Sow in June

There are still a few seed-grown options worth trying in June, particularly if you have a greenhouse, polytunnel or warm windowsill.

·        Melons: Sow early in June under cover or in a warm greenhouse for the best chance of ripening fruit.

·        Alpine strawberries: Sow in trays or pots; they are slower than vegetables but rewarding for small spaces.

·        Cucamelons: Sow in warmth and grow on in a greenhouse or very sheltered spot.

·        Physalis: Also known as cape gooseberry, this needs warmth and a long season, so sow as early in June as possible.

Top Tips for Sowing Seeds in June

·        Water before and after sowing: Dry soil is one of the biggest causes of poor germination in June.

·        Sow in the evening during hot spells: This reduces stress and helps moisture stay in the soil overnight.

·        Use shade for salads and coriander: Leafy crops are less likely to bolt if they avoid the fiercest midday sun.

·        Keep sowing small batches: A pinch of seed every fortnight is often better than one large sowing.

·        Protect seedlings from pests: Slugs, snails, flea beetles and birds can be especially active in early summer.

·        Label everything: June sowings grow fast, and labels help you keep track of varieties and sowing dates.

Final Thoughts

June is not too late to sow seeds in the UK. In fact, it is one of the best months for warm-soil germination, quick salad crops, late-summer flowers and early planning for next year’s borders. Focus on regular watering, choose the right spot for each crop, and make the most of every gap in the garden. A few well-timed June sowings can keep your beds, pots and plates full well into autumn.