Clear out summer crops and establish winter salads for five months of continuous harvests
Based on: Polytunnel Changeover: From Summer to Winter Vegetables by Charles Dowding
▶ Watch the source video on YouTube
What if your polytunnel could keep feeding you all the way through to April — even through frosts, short days, and freezing nights? Most growers let their tunnels sit empty or underperforming through winter because they never quite nail the transition window. Charles Dowding of the Homeacres channel has spent years perfecting exactly this handover, and now you can follow the same sequence he uses every October without guessing, missing the timing, or losing your winter crop before it even gets established.
Here is the real problem: the gap between pulling out your summer plants and getting winter salads established is brutally narrow. Miss it by even two weeks and your transplants go in too late, fail to root before the darkness closes in, and you spend January staring at a tunnel full of struggling seedlings instead of harvesting a reservoir of fresh leaves. Add a bone-dry soil profile after weeks without irrigation, a polytunnel cover caked in summer grime blocking precious winter light, and the temptation to skip garlic underplanting, and you are leaving months of food on the table.
Imagine walking into your polytunnel in January, fleece at the ready for the cold snaps, and seeing row after row of rocket, lettuce, endive, mustards, chard, and kale standing strong — plus a bonus garlic crop pushing through between the rows. That is what Charles and his team at Homeacres produce every single year at 51 degrees north, roughly the latitude of Nova Scotia. If they can do it there, the method works anywhere with a polytunnel.
Charles Dowding is one of the most respected no-dig growing voices in the world, and this changeover process has been refined across more than a decade of consecutive growing seasons inside the same tunnel. The garlic cloves he plants indoors have come from bulbs grown in that very tunnel for 14 straight years. That is not theory — that is a proven, repeatable system.
This checklist distills every actionable step from the video: when to pinch out and stop watering summer crops, how to clear and compost efficiently with a team, how to clean the polytunnel cover to maximise winter light, how to re-wet dry soil using a spray line, how to dib and plant up to a thousand transplants quickly, and how to slot garlic in without sacrificing any bed space. Pick it up, print it out, and work through it step by step — your winter larder is waiting.
Every checklist item comes with actionable notes to guide you — things like "Don't forget to do this before you start," "Avoid this common mistake," or "Set a reminder for 30 days out." Nothing vague, just clear next steps.
+ 26 more action items inside...
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