the only thing that can reliably kill a mature Echinacea plant is sitting in stagnant, soggy winter water, which rots the central taproot.
2. Install the Plant with Care: Plant at the correct depth to protect the crown.
Dig a hole twice as wide as the nursery pot, but exactly the same depth. Gently loosen the outer roots of the root ball if they are circling tightly.
Place the plant in the hole, ensuring the crown (where the green stems meet the roots) sits perfectly flush with or slightly above
