Another succulent that would be great for this arrangement is the Euphorbia tirucalli, also known as Fire Sticks. Take a look at Crassula Perforata - String of buttons for another great addition to your trailing succulent arrangement. Let's discuss how to water and deal with an underwatered string pearl. Ensure you establish the real The Browning of leaves cause should not be confused as too much light also causes the leaves to become brown. Expending too much heat on the plant can cause it to burn and even kill it. Another golden rule to look at when watering your plant is its size.