September 2026 · UK planting calendar
When to sow, plant and pick. Worked out for your town.
Planting dates calibrated to your local frost history, not a generic UK calendar.
In season now
What to grow now
Radish
last month to sow outdoors
Sow outdoors March to September, harvest April to October.
Mustard Greens
last month to sow outdoors
Sow outdoors April to September, harvest May to October.
Mizuna
last month to sow outdoors
Sow outdoors April to September, harvest May to October.
Garlic
Plan ahead · plant out from 20 Sept
Plant out September to November, harvest May to August.
Strawberry
plant out until Dec
Plant out September to December, harvest June to July.
Elephant Garlic
Plan ahead · plant out from 20 Sept
Plant out September to November, harvest April to July.
Your garden in When to Plant
A place for everything you’re growing.
Turn planting dates into a plan for your own patch. Create a garden to keep your plants, next jobs and growing notes in one place.
Create your gardenStart free with up to 5 active plants.
Keep your plants together
Add what you’re growing, from a few pots to an allotment.
Know what to do next
Follow growing steps timed to your garden’s location.
See how your garden grows
Tick off jobs and add notes as you go, from sowing to harvest.
Why the town matters
Penzance gets about twelve more frost-free weeks a year than Edinburgh, on average.
Every sowing, planting-out and harvest window on this site is worked out from the average last spring frost and first autumn frost where you actually garden, taken from 30 years of Met Office records, and what each plant can put up with.
They're averages, not promises. A late frost can still flatten your courgettes, so keep an eye on the forecast. That's gardening.
Where the dates come from →Same tomato, different towns
Penzance
average last frost around 23 Mar · about 247 frost-free days on average
Sow indoors February, plant out April, harvest June to November. Typical frost risk November to March.
Edinburgh
average last frost around 4 May · about 165 frost-free days on average
Sow indoors March to April, plant out May to June, harvest August to October. Typical frost risk October to May.
Met Office HadUK-Grid · 30-year averages
From the blog
10 Aug 2026
UK Drought 2026: How to Keep Your Garden Alive (Even With Hosepipe Bans)
Hosepipe bans don't mean a dead garden: what to water first, how to stretch every litre, and what's still worth planting.
Read the blog →Start with your town.
Free, and you don't need an account. Type your town and every date on the site is worked out for it.