Secrets of sowing seeds

Growing plants from seed has to be one of gardening’s most profound pleasures, and now is the ideal time to start thinking about what you’re going to grow this year. Today’s programme is jam-packed with great advice, including a surprising rule of thumb you may never have heard of from our resident allotment guru Guy Barter. Plus RHS Gardening Advisor James Lawrence gives tips on growing houseplants from seed and organic grower Claire Ratinon shares her love of tomatoes.