While overwatering is a common leaf drop culprit, underwatering can cause issues, too. Because you should only water your P. peperomioides when the top two inches of soil feel dry, it can be easy to let a plant go too long without watering.
While P. peperomioides is a relatively tolerant plant, it has a preferred temperature range. An ambient temperature between 60 and 85 degrees F is ideal for the Chinese money plant.
Pests can also trigger leaf loss in Jade Plants, but it’s less common than many other causes. Bacterial infections that kill off the roots or entire stems can lead to widespread leaf drop.
In P. peperomioides’ natural habitat, the plants receive dappled sunlight that filters through a forest canopy. When grown indoors, the plants grow best in bright, indirect light.