Urn plants (Latin name: "Aechmea") are easy to keep. They grow to about 60 cm across, but because the stiff, green-and-grey leaves have spiny edges, they need to be out of the way. Urn plants got their name because they have a hole in the middle made by the ring-shaped arrangement of their leaves. This central urn fills up with rainwater in the wild and is often home to insects and frogs. Its flowers are held high on a single stem, and protected by a globe of small, pink leaves which lasts for several months.