My plants will flower in a month or two but have dead leaves up the stems already.
The leaves are easy to remove. The plant is putting all of it's energy in to making flowers. These plants have been bred to be prolific bloomers. This process is very energy consuming. You can help it by fertilising. Use a balance fertiliser that contains macro & micro nutrients. The macro nutrients are normally located on the front of the package as three numbers like 10-10-10. On the side or back of the package it will list all the nutrients available for your plants. It should have a list that includes the macro nutrients, Nitrogen, Phosphorous & Potassium and should include other nutrients like manganese & iron. Good Luck.