For help in choosing the right one, we have written an article about the best grow lamps as reviewed by succulent enthusiasts. You can check the soil moisture content by digging an inch into the soil using your fingers, or you can purchase a moisture meter. This is easy to do when growing the plant indoors. In many places, however, it can be challenging to do so outside. Before you walk away, make sure to check if there is still water at the bottom. If the succulent is not growing back in color and seems to be growing up or down, it may be time to get a grow light.