You wanted colour? You got it! Echinaceas (AKA coneflowers) are some of the brightest and boldest flowers in the garden and they've got stamina too, lasting all the way from June to October. Grow them in the front or centre of a mixed border, plant them wild-style as part of a meadow or prairie garden or show them off in pots by the front door. Named after the Greek word for 'hedgehog' due to their spiny centres, they're a big hit with wildlife too, attracting bees, butterflies and birds to your garden.