As seen during our appearance on BBC Gardeners World we use garlic wash as a slug deterrent on the nursery. Please find below the recipe that we use and find very effective. The quantities aren't exact and you can always alter them as you wish.
Open a window because it's going to get garlicky!
We send out orders throughout the Autumn and Winter. Please be aware some varieties may be cut back at this time of year as we begin to tidy them on the nursery.