In Oxford, neighbours Anne and Fliss are set on breaking down boundaries. They want to combine the front gardens of their semi-detached houses into one wonderful space filled with all their favourite grasses and perennials. The big question for Monty is whether two gardening enthusiasts, with definite ideas of their own, can work together to achieve one goal. With conflict looming, will Britain's favourite garden expert be able to bring his calming influence and garden know-how to the Oxford neighbours and achieve horticultural harmony? Meanwhile in Pewsey, former army officer Sally has a tarmac and rubble-covered area that she wants to convert into a cosy, scented, wildlife-friendly haven for her daughters Georgina and Caitlin - and she wants it ready in time for the summer. All three have a lot of different ideas and Monty can see that there is a great deal to achieve in a short timeframe. Fortunately for Sally, she has an army of friends willing to get involved. Can Monty take command of Sally and her troops to complete this ambitious project before the summer is over and the girls go back to school?