I live in zone 9, near Tampa. I have never grown coneflower, and I planted 2 hybrid coneflowers, late summer last year, in September. Both of them started to die in December. Now it is late February and both plants are dead all the way to the ground. I gently yanked the remaining brown stems, just to see how dead they actually were and they came off easily in my hands. There is now no signs of life there at all. Will they come back, or should I just try to plant new ones? If they are actually dead, what might have killed them? We had a mild winter with a few frosts, but generally Temps did not go below 30. I watered lightly only every few days through the winter months, which has always been adequate for my other plants. Thank you!
I live in zone 9, near Tampa. I have never grown coneflower, and I planted 2 hybrid coneflowers, late summer last year, in September. Both of them started to die in December. Now it is late February and both plants are dead all the way to the ground. I gently yanked the remaining brown stems, just to see how dead they actually were and they came off easily in my hands. There is now no signs of life there at all. Will they come back, or should I just try to plant new ones? If they are actually dead, what might have killed them? We had a mild winter with a few frosts, but generally Temps did not go below 30. I watered lightly only every few days through the winter months, which has always been adequate for my other plants. Thank you!