Perennials are some of the most fuss-free plants. You can buy them once and they come back year after year so you do not need to plant new flowers every year. With its beautiful purple colour and powerful aroma, lavender is a must for low-maintenance gardens.

More perennial favourites to include are sedum, geranium, periwinkle, daffodils, peonies, armeria, astilbe, and hostas. Each requires little maintenance and will really brighten up your garden with minimal effort.