Kniphofia are better known as red hot pokers. They’re easily recognised from their distinctive vertical spikes topped with bottlebrush-like flowers in a range of fiery colours. From red and orange through to yellow and lime green, kniphofia flowers emerge from a clump of long, narrow foliage that’s attractive in its own right. They have a long flowering season and look great planted en masse in hot-coloured borders growing alongside plants that enjoy the same sunny growing conditions. They’re a popular choice for dry borders and coastal gardens.