When Granpaw Broon is not sure what to do next in his garden, he 'asks Thomson' - his favourite gardening bible. In this book, Granpaw and Paw give their thoughts on how to grow in: allotments, window boxes, hanging baskets, container gardens, and how to grow garden plants as well as find that plant for a dark stair, with lots of reference and reproduction from "Thomson's Gardening Assistant".