If you suspect that your Sedum Praealtum could be close to dying, it could be because the succulent was given more water than it needed. Another possibility is that pests have made Shrubby Stonecrop their home. Overwatering When it comes to succulents such as Green Cockscomb, you should not water them as you would other plants. Succulents can store water in their leaves and stems. Watering the soil while there’s moisture will put the roots at risk of rotting. As the roots are immersed in a moist condition for a long period of time, their cells will keep expanding until they rupture. A fungal infection will set in that will spread rapidly throughout the plant. A strong sign of fungal infection is discoloration on the leaves and stems. Discoloration might appear as black spots or a change in color from a healthy green to a suspicious yellowish-black. The first step to saving Sedum Praealtum is to cut off the infected parts with a sterilized knife or garden shears. From here, shift your focus to the roots. Remove Shrubby Stonecrop from the soil and cut off all of the roots that have rotted away. Allow Sedum Praealtum to dry out before replanting it in a pot filled with fresh cactus mix. Pest Infestation Insects such as mealybugs will drain Sedum Praealtum of nutritious sap while snails and mollusks will feast on its different parts. Protect Shrubby Stonecrop from these pests by spraying it with neem oil or any type of organic insecticide. Remove traces of mealybugs by wiping all white, cotton-like substances on the succulent plant’s leaves with a cotton swab dipped in 70% isopropyl alcohol.