Monty Don gets to grips with a new project, beefs up his borders by dividing perennials and celebrates spring-flowering shrubs. Frances Tophill prepares her vegetable plot on an allotment, while Nick Bailey has tips on how to get everything shipshape for the season ahead. Plus, Adam Frost explores a tropical garden in Dorset and meets a man who is passionate about growing unusual and exotic plants from seed and Carol Klein profiles the camellia.