Hens and Chicks, Sempervivum, are a hardy plant that is extremely easy to grow. The plants can tolerate poor soil and are drought tolerant. They will also spread easily (although they are not invasive). The hens are the large part of the plant, and the babies are the chicks, which is how the plants spread. Most hens and chicks can grow in USDA plant hardiness zones 3 to 8. Some can survive in zones 2 and 9 as well. Most people think of these plants as succulents, but they are actually in the stonecrop family.
These low maintenance plants require very little care once established. During periods of extreme drought, the plants may need supplemental water. But in general the plants can go very long periods of time without water. Ensure the soil drains well and does not stay moist or the roots will rot. Plant in a location that gets full sun (at least 6 hours of direct sunlight per day).
Click on the links to read more in depth information about how to care for hens and chicks. But in general the plants require very little care.