They do best (and are at their most beautiful) in spots with full sun exposure. Like many sedum plants, they are drought tolerant and grow well in sandy, poor soil. They have a low, spreading habit, and several plants spaced a foot (31 cm.) or so from each other will eventually grow into a very pleasant mounding groundcover formation that looks especially nice along borders.
Firestorm sedums are green at the center, with leaf edges that range from yellow to vivid red. The color of the edges spreads and gets brighter with more sun exposure and in cooler temperatures. In the spring, they will produce round clusters of small, white, star-shaped flowers that offer a striking contrast to the red and green of the foliage.