Right now, in September: Plant overwintering onion sets; harvest squash and the last of the tomatoes.

Free tool

What can I grow here?

Pick your space, sunlight and container size to find which of 115 crops fit. No account needed.

Choose your space above to see what actually fits it.

This tool covers the crops already checked on this site — it isn't exhaustive. Want sowing dates without picking a space first? Try the UK Sowing Calendar. The PDF guides (coming soon) will go deeper on exact pot sizes for your space specifically.