Frost Dates in Scotland
late May to June
September to October
The growing season here
Scotland generally has Britain's coolest, shortest growing season, although the mild west coast differs greatly from the Highlands, islands and inland glens. Long summer days offer a useful advantage once warmth arrives. These are very broad averages: elevation, exposure, snow cover, coastal influence and frost hollows can shift frost dates significantly.
What it means for sowing & planting out
Prioritise hardy and quick-maturing crops, and start tender vegetables under cover well before planting time. Set out tomatoes, courgettes, beans, squash and tender flowers only when frost risk has passed at your own site, which may be well into June in colder areas. Harden plants off thoroughly, keep fleece or cloches ready, and check the Met Office forecast frequently.
Tips
Favour sunny, sheltered beds, raised soil and season-extending protection such as fleece. In upland and northern gardens, choose crops that mature quickly and sow autumn crops early. Ask the RHS or a local garden centre for local experience, especially if your garden lies in a glen or frost pocket.
These are approximate regional averages - frost varies with altitude, frost pockets, coast and aspect. Check the Met Office forecast for your area before acting. Page updated 18 Sep 2026.