What Flowers Are in Season in June in the UK?

Short answer: June is the peak of the British flower year. Peonies, garden roses, sweet peas, delphiniums, foxgloves, larkspur, cornflowers, astrantia and alchemilla are all cut here, at their best, at the same time. It is the only month when an entirely British bouquet needs no compromises at all — and the peony window inside it is about four weeks long.

If you buy British flowers once a year, buy them in June. Every other month is a trade-off between what is in season and what people want; June is the month when those two lists are the same. The days are at their longest, the fields are cutting, and the flowers that define an English summer are all available for a few weeks together.

What is actually in season in the UK in June?

British peonies, garden roses, sweet peas, delphiniums, larkspur, foxgloves, cornflowers, ammi, astrantia, campanula, cosmos beginning, feverfew, nigella, phlox, scabious, snapdragons, stocks, sweet williams and the first dahlias at the very end of the month. Alchemilla, mint, sweet cicely and copper beech carry the foliage, and there is more scent in a June bunch than in the whole of the rest of the year put together.

What is not here: dahlias in volume, which arrive properly in July and run to the first frost, and the autumn material — hydrangeas turning, berries, seed heads. June is the front end of summer, not the middle of it.

Is June really the peak of the British flower year?

By any measure that matters, yes. It is the widest month for the number of species cut in this country, the longest-stemmed, and the only month when British growers can supply an entire wedding without an import in it. What it is not is the cheapest month — demand peaks with supply, because June is also the busiest month for weddings.

The useful consequence of that: if you want British flowers and price matters more than the date, September is the quieter answer, and if the date matters more than the price, June is the month you plan everything else around.

When are British peonies at their best, and when do they stop?

The British crop runs from roughly the end of May to early July, with the best three weeks landing in June. After the British season closes the trade switches to Alaska, Chile and New Zealand, which is how peonies appear in shops in October — but those have flown a long way and they behave like it.

Practical notes for June peonies, because they are the flower people get wrong most often. Buy them as tight, soft buds that give slightly under a thumb, not as open flowers. They open in two to four days in a warm room and in a week in a cold one, so the room controls the timing far more than the water does. And a peony that will not open usually needs warmth, not more water. What is cutting this week is in peonies.

What is a British garden rose, and how is it different?

A garden rose is bred for scent and for the shape of the open flower rather than for transport. British ones are cut in June and July, they have shorter, thinner, more crooked stems than an imported rose, the heads are heavier, and they last four to six days rather than ten to fourteen.

That trade is the whole point, and it is worth knowing which side of it you are buying. An imported rose from Kenya or Ecuador is a better flower for a fortnight on a desk; a British garden rose is a better flower for a table this weekend. Both are in roses, and if the difference matters for a particular order, say so when you place it.

Are sweet peas worth their short vase life?

In June, yes, and this is the month to decide that for yourself. British field-grown sweet peas are at full volume, the scent is at its strongest, and they cost less than at any other point in their season.

They last about four to five days. Keeping them going is a matter of picking off spent flowers daily, keeping them out of the sun and out of a fruit bowl — ripening fruit gives off ethylene, which finishes sweet peas faster than anything else in a kitchen. A June bunch that has been left next to a bowl of bananas will be over in two days, and it will look like the flowers were at fault.

Which June flowers last longest in the heat?

Alstroemeria, chrysanthemums, carnations, lisianthus and imported roses, in that order, and among the seasonal British material astrantia, ammi, alchemilla, scabious and snapdragons hold up best. Anything woody — including garden roses — benefits from a slanted cut and deep water for the first hour.

The heat is the real variable in June, and it is the first month where it works against you all day rather than only in the afternoon. Flowers left in a car for twenty minutes in June lose days. A cool room out of direct sun, water changed every other day, and stems recut when the water is changed will do more for a June bouquet than any additive — the figures are in how long flowers last. Potted plants are the honest answer to a hot flat, and those are in plants.

When is Father's Day in the UK in 2027?

The third Sunday of June, which in 2027 is the 20th. Britain and the United States share the date; it is Mother's Day that moves across the Atlantic, not Father's Day, and that catches people out in both directions. Australia and New Zealand mark it in September, Germany on Ascension, and Spain, Portugal and Italy on the 19th of March.

For what it is worth as a flower question: June suits it. Foliage-heavy, structural arrangements with alliums, eucalyptus, astrantia and snapdragons are all in season, and so are plants, which are the more common ask. The range is in Father's Day flowers.

When should you order in June, and what about weddings?

June is the peak wedding month in Britain, and the peony window inside it is the single most contested three weeks in the British flower calendar. Growers take wedding commitments months ahead, so a June wedding that wants British peonies wants them confirmed in winter, not in May. Everything else British in June is easier to get at short notice — see wedding flowers.

For ordinary orders none of that applies: we deliver across London seven days a week and take orders until 22:00 for the following day, and June has the deepest choice of the year. For the month just gone, see what is in season in May.