Chris - I agree with your husband. Isn't that Dr. Shock behind the tree?
Marilyn, Almost all of my heux in zone 7A have heaved from the frost thaw cycle, and it's pretty common. I wait until after our last frost date and lift them, remove dead leaves and replant. The heux in pots and planters have not heaved and I assume it's because of the lighter soil and drainage holes, but don't know.
