Other people have placed Kalanchoe Delagoensis ‘Chandelier Plant’ in the same pot with other succulent plants without any problems. Your String of Pearls may not have received enough nutrients from watering if they have been kept in the same potting material for over a years. I confess to neglecting this plant, and too much focus on my String of Pearls. Sunburn and sun damage are the most common reasons String of Bananas turn yellow. String of Pearls, especially those that are young and less established, require more water to thrive than mature plants.