Episode 90: A rose garden fit for a queen, coping with critters and knowing your onions

This week we're at RHS Garden Wisley getting tips from the professionals on the very best rose varieties and what to plant with them for a long-lasting and fragrant display. Entomologist Andy Salisbury gives seasonal advice on dealing with vine weevils and chafer grubs, and resident vegetable expert Mario Di Pace shares his tips on growing onions, garlic and shallots - finishing with some delicious recipe ideas.