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What to sow in May in the UK

In May, tomato, chilli, courgette and more can go in outdoors in most of the UK, with sweet pepper, aubergine, celery outdoors only in milder places.

Outdoors in most of the UK

Good to go in 60% of towns or more.

Outdoors in milder places

Only where it’s warm enough this month.

Under cover

In a greenhouse or polytunnel.

Dates for your town

Exact dates change from town to town. Find yours for the whole year.

Get these dates as reminders

Bia turns this calendar into a nudge when it’s time to sow, plant out and harvest, for your plot. Free for 2 months.

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How these dates are worked out: climate records for each town (ERA5-Land, 1995 to 2024), its frost dates and its height above sea level turn a seed-packet date into a local one. Contains modified Copernicus Climate Change Service information; towns from GeoNames (CC BY 4.0). How sowing dates work