Get our comprehensive tips on The Top Succulent Growers Issues and the Best Lighting Practices for Succulent Crops today! A north-facing glass receives little light but is sufficient for the optimal growth of your jade plant. The old lady cactus will look tired if there's too much sunshine. They need time to settle into their new soil. They grow fastest in the summer, so that's the best time to fertilize them. Pilosocereus will tolerate more water than any other succulents or Cacti, however, you must be careful not to overwater them. Other types of succulents are called winter growing.