This week we're zooming in on gardening to appreciate some miniature marvels. James Wong shares his experiences creating miniature tropical worlds at home using terrariums, and Peter Goodchild of RHS Garden Wisley explores the colourful diversity of alpines. Historian Wesley Kerr tells the story of a groundbreaking painting of a gardener that was a milestone in the representation of Black people in British art. Plus ideas of what to do with your children in the garden with RHS Advisor Becky Mealey.