Take a look at our tips on The Most Common Issues amongst Succulent Growers, and even the Best Lighting Practices For Succulents. Although a north-facing window gets a lot of light, it is not enough to ensure the best growth for your jade plants. Too much sun can make the old lady cactus look sad. They need some time to settle into the fresh soil or cactus mix. They tend to grow faster in the summer. This is the best time of year to fertilize them. Pilosocereus will tolerate more water than any other succulents or Cacti, however, you must be careful not to overwater them.