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WHERE GARDENS FLOURISH · AUTUMN

What to Plant in September

Make the most of warm soil and begin preparing your garden for the changing season. Explore what to sow, plant and enjoy in your UK garden this month.

Explore September plants
THIS MONTH IN THE GARDEN

September gardening at a glance

Make the most of warm soil and begin preparing your garden for the changing season.

30 sowing suggestions173 planting suggestions92 plants in flower
SEEDS & SOWING

🌱 Sow in September

30 plants

Sow these seeds this month (30 plants).

PLANTING THIS MONTH

🪴 Plant out in September

173 plants

Put these into the garden now (173 plants).

SEASONAL COLOUR

🌸 In flower in September

92 plants

What's blooming this month (92 plants).

GARDEN PLANNING

❄️ UK frost dates by region

Approximate last spring / first autumn frost — always check your local forecast before sowing or planting out tender plants.

RegionLast spring frostFirst autumn frost
Scotland & far northlate Maylate September
North of Englandmid Maymid October
Midlands & Walesearly–mid Maylate October
East & South East Englandlate April–early Maylate October
London & urban areasmid Aprilearly November
South West & coastalmid AprilNovember
View every monthly plant suggestion on one page →

UK gardening times vary by region, exposure and weather. Check local conditions and frost risk before sowing or planting out tender plants.

KEEP YOUR GARDEN FLOURISHING

Find the right plants for your garden.

Discover plants by sunlight, soil type and growing style with the GardenWizz Plant Finder.

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