If your dahlias have been putting on a beautiful show all summer, they're probably winding down for the autumn now – which means it's more important than ever that you know when to lift dahlia tubers from the ground.
In fact, this task is one of the most crucial steps in overwintering dahlias. It's not a case of lifting the tubers on a whim – there's actually a very specific window you'll need to hit to ensure your tubers survive the winter months.
