Diarmuid Gavin: My tried-and-tested pick of herbaceous perennials and how to plant them

With a beautiful spell of warm weather kicking off April, we are now in full gardening mode. The soil is heating up and there’s plenty of sunshine. It’s the perfect time to plant herbaceous perennials in your garden.

These are plants that will flower this summer, die back over winter and return year after year. They are often low-maintenance and, once planted in the right spot, will give you a great return..