Our tips and tricks on Succulent Growing are available today. Even though a north-facing window is exposed to a little sunlight, the amount of light needed for optimal growth of your jade plants is very limited. The old lady cactus will look tired if there's too much sunshine. They require time to settle in the new soil or cactus mixture. They grow fastest in the summer, so that's the best time to fertilize them. Pilosocereus can withstand more water than other succulents, cacti and cacti. But, be sure to not overwater them. Succulents can also be called winter growing.