What to sow in September
In zone 8, most of the UK, September has 11 crops to sow or plant: lettuce, radish, spinach, corn salad, green manure (phacelia), turnip, chives and strawberry.
Sow direct in September
Plant out in September
What to harvest in September
- Tomato
- Cherry tomato
- Lettuce
- Radish
- Carrot
- Onion
- Courgette
- Dwarf bean
- Sweet corn
- Sunflower
- Spinach
- Strawberry
- Basil
- Flower strip
- Leek
- Cucumber
- Winter squash
- Red kuri squash
- Climbing bean
- Pea
- Beetroot
- Turnip
- Cabbage
- Cauliflower
- Broccoli
- Kale
- Sweet pepper
- Aubergine
- Potato
- Raspberry
- Parsley
- Thyme
- Rosemary
- Chives
- Mint
- Melon
- Celery
In the other zones
| Zone 6−23 to −18 °C (−10 to 0 °F): high mountains | onion, spinach, corn salad and green manure (phacelia) |
|---|---|
| Zone 7−18 to −12 °C (0 to 10 °F): upland Britain, eastern France, the Alps | lettuce, radish, spinach, corn salad, strawberry, green manure (phacelia) and turnip |
| Zone 8 (reference)−12 to −7 °C (10 to 20 °F): most of the UK and France | lettuce, radish, spinach, corn salad, strawberry, green manure (phacelia), turnip, thyme, rosemary, chives and mint |
| Zone 9−7 to −1 °C (20 to 30 °F): south-west England, Brittany, Atlantic and Mediterranean coasts | lettuce, radish, spinach, corn salad, strawberry, green manure (phacelia), leek, turnip, cabbage, cauliflower, broccoli, parsley, thyme, rosemary, chives, mint and celery |
| Zone 10−1 to 4 °C (30 to 40 °F): Isles of Scilly, the French Riviera, coastal Corsica | lettuce, radish, carrot, dwarf bean, beetroot, cabbage, cauliflower, broccoli, kale, potato, parsley and celery |
Indicative months. A cold year or a garden at altitude shifts everything by a month; watch the frosts too.
Next month
October brings onion, garlic, broad bean, pea and raspberry: make room for them now.
Questions about September
What to sow in September in zone 8?
Sow direct: lettuce, radish, spinach, corn salad, green manure (phacelia), turnip and chives. Plant out: strawberry, thyme, rosemary and mint. The table above covers zones 6 to 10.
What is harvested in September?
tomato, cherry tomato, lettuce, radish, carrot, onion, courgette, dwarf bean, sweet corn, sunflower, spinach, strawberry, basil, flower strip, leek, cucumber, winter squash, red kuri squash, climbing bean, pea, beetroot, turnip, cabbage, cauliflower, broccoli, kale, sweet pepper, aubergine, potato, raspberry, parsley, thyme, rosemary, chives, mint, melon and celery, depending on the sowing or planting date.
I am in zone 7 or zone 9, what changes?
Zone 7: lettuce, radish, spinach, corn salad, strawberry, green manure (phacelia) and turnip. Zone 9: lettuce, radish, spinach, corn salad, strawberry, green manure (phacelia), leek, turnip, cabbage, cauliflower, broccoli, parsley, thyme, rosemary, chives, mint and celery. A colder zone shifts sowing by about a month; Hortipix uses your own zone.
Updated 20 October 2026, Hortipix catalogue version 1. Windows still being checked against Le Guide Clause, Vilmorin and Terre vivante (RHS and Cornell for the UK and the US), compared with OpenFarm (CC0). They remain indicative.