In 'The Know Maintenance Perennial Garden', Roy Diblik shares his unique approach to growing perennials so that readers can reap the benefits of a beautiful garden with minimal maintenance. He lays out fifty self-sustaining perennial communities on a grid, which can be implemented in a variety of sites and different scales. Each segment only requires up to 25 minutes of maintenance every 2 weeks. The 'Know-Maintenance' approach develops gardeners' knowledge of how their plants will interact and gives them a greater understanding of their site and soil. This will allow them to create a spectacular planting display using the huge range of colours and forms offered by perennials.