Shop manager Katie Cleary said the Love Your Garden presenter will give a 30-minute talk about unusual and quirky gardening techniques, including feeding plants with bananas, beer, nails, viagra and vodka.
The garden centre’s new building will be home to a farm shop, florist and furniture, gifts and Christmas departments and a restaurant.
Cleary added: "On the launch day there will be farm shop suppliers on-site displaying their products, offering free tastings and answering any questions people may have.
The garden centre’s new Christmas department will be opening on the day too.
Have you registered with us yet?
Register now to enjoy more articles and free email bulletinsSign up now