Finished replanting the fernies in the raised bed. This time, I covered the entire section with 1 to 2 inches of sand to compensate for the soil settling over a 4 year period. Most of the originals were budding at the surface of the soil and the new replants were placed with the eyes just under 2 inches from the top of the blocks as measured with a straightedge placed across the bed. The sand should provide some physical protection and will be easily brushed aside if needed in the Spring. Looking forward to a really nice display next Spring.