Wanted to see if anyone could help me find an answer for what we did wrong. We planted about 4 acres of sunflowers for the first time this year. We went to the camp on 06/23 to check on everything and they looked great. Entire field had bloomed out, so obviously we were pumped. Well, we then went back a week later and everyone of them was dead. Any idea on what happened or what we should have done? We planted the perdovic variety. We did not have a soil sample as this is new property to us. Applied 200lbs of 19-19-19 per acre when we planted. Thanks for the help.