Cracking good kale and sloes to savour

Learn how to grow winter veg staple (and superfood) kale with RHS expert Guy Barter, who recommends the best varieties and explains how to keep problems at bay. There's also great advice on when and how to protect tender plants from the winter cold, and chef Mark Diacono tells us how to make delicious and warming sloe gin from the fruit of the blackthorn bush.