
I thought I’d managed to get rid of it and subsequently planted 2 more strawberries but it’s started coming up again. I dug up more runners and have covered the surface with a thick black bin liner with the strawberries poking through it, but the mint is still coming up under the plastic. Ever few days I look underneath and there are more shoots! It’s even started coming up through one of my strawberries!

How can I get rid of it?! Is there any safe way of applying a weed killer to the mint without affecting the other plants?
Please help!!!
Thank you!!!