08/09/2026
Summer may be behind us but the growing season is far from over! September is the perfect time to sow and plant crops that will provide fresh harvests throughout autumn and into winter, especially if you're growing in a polytunnel.
Here's what you can plant this month 👇
🥬 Winter Salads – Hardy salad varieties such as mustard leaf and lambs lettuce can be sown under a cloche or cover for winter harvests.
🫛 Broad Beans - Sowing broad beans now in autumn can save time in Spring. They are quick to establish before they lay dormant when temperatures drop, but resume quickly in Spring time provided they have been protected from frost over winter.
Radishes – Radishes mature in just a few weeks, so sowing a late batch means another quick harvest before frosts hit!
🌿 Herbs – Parsley, coriander and chervil can still be sown under cover to provide fresh herbs well into autumn.
🌱 Asian Greens – These quick-growing crops flourish in the cooler weather and are ready to harvest in just a few weeks.
A polytunnel is ideal for extending the growing season, protecting young plants from the first frosts and helping you enjoy homegrown produce long after summer has ended. Visit the polytunnel builder on our website and get growing this autumn!
Shop Polytunnels: https://bit.ly/44d2Ace