This year has been really terrible for my dahlias. The JBs attacked them nonstop. For those dahlias flowers that were not attacked by JBs, they developed brown edges that dried to a crisp before the flowers were even fully opened. And now, some buds fail to mature. Can you please help me identify these problems and what corrective actions should I take to get nice blooms?? Thanks in advance!
Browning of petals before flowers are fully opened:
