Q: My cymbidiums need help. The new leaves cannot support themselves. They fold over about halfway along the length of the leaf. This fold turns brown and hard. Some of the leaves have a long split running lengthwise down the center of the leaf.
A: From information provided my best guess is that you are not providing your plants with enough light. Cymbidiums are high-light plants, and if they do not receive enough light, the foliage will become quite soft and unable to support itself. This usually leads to the sort of physical damage you describe.