What is wrong with my Dianthus?
Hello.I planted 3 dianthus in a new bed in April. The past couple of weeks it is turning straw like color. The green that is left is not very sturdy and tends to fall over. Do you think it might have a disease? Anything I can do? And if it is diseased, how do I kill it if I remove the plant and want to put something else in there? Thanks for any help.