Episode 87: Gardening QandA including pond algae, growing potatoes for Christmas and box tree moth; Wisley's big plans for the future

THis week we answer a bumper crop of gardening questions, including: • How to get clear water in your pond • Which fruit and veg are wildlife-friendly • How to grow bottlebrush plants • Growing potatoes for Christmas • Spotting and controlling box tree moth Plus Wisley's youngest-ever curator, Matthew Pottage discusses the garden's big plans for the future, and RHS edibles guru Jim Arbury gives advice on seasonal tasks in the vegetable and fruit garden.