Dry Leaves syndrome >.<

This is pretty normal in late flower and nothing to be concerned over. What happens is that your plant will use the previously made sugars, amino acids, carbs etc from the old leaves to help in the growth of the flowers, as it is more efficient to recycle the "pre-made" elements from the older leaves as it is to grow flowers AND make carbs, amino acids, sugars etc from new during flowering, which then means all energy can go towards flower growth. This is also why defoliation is such a bad idea, it removes this ready source of vital pre-made growth elements for the plant to access during flowering. Without the older leaves, some energy must go towards making new carbs, sugars, amino acids etc, meaning there is less available free energy for flower growth, which then limits flower size. This is basic cannabis biology 101, but many people fail to recognize or understand this simple fact and continue to advocate for defoliation. Besides this, defoliation also reduces your plants capacity to make energy, further limiting growth. So, luckily you left these older leaves in place to perform their function of assisting your plant to grow her biggest and best flowers! Hope this helps,........ Organoman.