Carole Baxter presents the latest Back to Basics feature, and she’s talking about the many bugs, blights and diseases that can attack plants: what they are, what damage they can do, and how best to stop them. Diana Yates reviews her own 'vertical garden' area at Beechgrove that demonstrates planting ideas for those with small gardens and balconies, and Calum Clunie discusses how to get a supply of sweet pea seeds for next year’s growing.