After installing some plants for a woman she called me back to let me know that all 6 Black-eyed Susans i installed have died. All of the other plants are doing good.(Hosta's, mums, Burning bush and others) It has been a month since they were installed. I was a little concerned with there possibly not being enough drainage for these when i installed them and i think that is what the problem is. How could you fix this problem to add more drainage. Also when i went to collect the final payment for this job a week later i noticed they were slumped over. So i tied them to stand up. Any ideas or suggestion will be appreciated.