New ways of growing and a fond farewell

This week we visit the World Food Garden at RHS Wisley to see how new eco-friendly ways of growing are taking shape. Guy Barter gives his expert guide to brassica growing for bumper crops of Brussels sprouts, kale and kalettes next winter. Plus a fond farewell to Sue Biggs CBE, who's been Director General of the RHS for the last 12 years – hear her reminisce about some personal highlights and a close encounter of the royal kind...

Useful links

• Discover the World Food Garden at RHS Garden Wisley
• See our RHS Grow Your Own for advice on growing all kinds of fruit and veg
• Join the RHS for fabulous days out, free gardening advice and more