These cabbage collars are great.Not only do they deter cabbage root fly but they are copper coated to deter slugs and snails also.That's pretty neat as they suppress weeds around the plant and also conserve moisture as well.Made from heavy duty fabric coated with copper.The icing on the cake is they are reusable.20 collars which are 12.5cm (5") in diameter.
20 Gardening Naturally Cabbage Collars
£8.99Price