Perennials are plants that return year after year for more than two years, good examples are echinacea, lavender and hellebores. If you have a couple already in your garden, one of the smartest hacks to double the amount of plants in your garden borders for free is to divide them.
At this time of year, you can split a good patch of the best perennials and plant them elsewhere. It really is worth doing as it won't cost you a penny, just some time in the garden separating and replanting.
