Question
I have lost most of my black eyed susans. I thinned them 2 years ago and, although this should have been the thing to do{they were taking over} they never thickened up again. Also, they have had a fungus these past 2 years. Black stems,leaves etc. Help!

Answer
Hi Nancy,
Thanx for your question.  I was thinking this is a fungal problem.  I found this cool website from Minnesota that I think will help you.  

http://www.extension.umn.edu/yardandgarden/ygbriefs/p154rudbeckiadisease.html

Thanx to the University of Minnesota Extension Service.

Tom