UK & IE calendar
September in United Kingdom & Ireland
Read this month through UK & IE's own RHS hardiness ratings — the guide below covers what to sow, plant and watch for right now.
This month's guide
What to Plant in September in the UK: Autumn Sowing
Discover what to plant in September in the UK, from overwintering onion sets and garlic to autumn green manures, spring cabbages, and winter salads.
Read the full guide →The full year