This cactus is otherwise known as Echinopsis spachiana. This cactus has a number of common names (Easter lily cactus, golden torch, white torch cactus), but derives its scientific name from the Greek for the hedgehog and the sea-urchin, because of the species’ spiny exteriors that they are thought to resemble. Once the plant has reached 1 metre in height, it is ready to show off its beautiful, hairy-tubed flowers, which can sprawl to a diameter of 15cm. An outer ring of multiple and apparently independent stamens are united at their base to form a ring known as an annulus or hymen, which serves as a nectar guide for visiting moths. These flowers only have a lifespan of 24hrs.