September 2026 · Sheffield planting calendar

When to sow, plant and pick in Sheffield.

Planting dates calibrated to real frost history for Sheffield, not a generic UK calendar.

In season now

What to grow now in Sheffield

Chervil

Chervil

last month to sow outdoors

Sow outdoors March to September, harvest April to November. Typical frost risk November to April.

Radish

Radish

sow outdoors until Oct

Sow outdoors March to October, harvest April to November. Typical frost risk November to April.

Lettuce

Lettuce

last month to sow outdoors

Sow outdoors April to September, harvest May to November. Typical frost risk November to April.

Mustard Greens

Mustard Greens

sow outdoors until Oct

Sow outdoors April to October, harvest April to November. Typical frost risk November to April.

Mizuna

Mizuna

sow outdoors until Oct

Sow outdoors April to October, harvest May to November. Typical frost risk November to April.

Perpetual Spinach

Perpetual Spinach

last month to sow outdoors

Sow outdoors April to September, harvest May to November. Typical frost risk November to April.

Explore all plants →

Based on 30-year averages · keep an eye on the forecast

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 garden

Start free with up to 5 active plants.

  1. Keep your plants together

    Add what you’re growing, from a few pots to an allotment.

  2. Know what to do next

    Follow growing steps timed to your garden’s location.

  3. See how your garden grows

    Tick off jobs and add notes as you go, from sowing to harvest.

Calibrated to Sheffield

Two dates set the growing year in Sheffield.

Every sowing, planting-out and harvest window on this site is worked out from the average last spring frost and first autumn frost in Sheffield, 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 →

Average frost dates for Sheffield

Average last spring frost
around 23 Apr
Average first autumn frost
around 8 Nov
Average frost-free days
≈ 199

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.

  • Sheffield (your town)

    average last frost around 23 Apr · about 199 frost-free days on average

    Sow indoors March, plant out May, harvest July to November. Typical frost risk November to April.

  • 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 →

Find a plant for Sheffield.

Search by name, or browse what's in season above. Every date stays worked out for Sheffield.