Asked January 27, 2021, 11:05 AM EST
Have 7 Brunnera Jack Frost planted 2 years ago. Every fall, they all turn jet black, shrivel, and
die to the ground. Every spring they come back, bloom beautifully, stay green for 3 to 4 months, then begin to turn black again.
How do I identify what's going on and then IF I'm able to do that, how do I treat the problem? I hate to dig them up and throw them away.
Montgomery County Ohio