I'm going to guess it's settling in. Especially if roots were exposed rather than a large dirt mass being moved.

Hi Debbie, I don't worry to much about planting sibs to deep. I suppose it could be possible. However, I have had a few that quit blooming the last couple of years and I have also divided them. They still haven't bloomed, and this is the second year for them. I am thinking it may be our weather, since it seems to be changing from year to year. For me this year it is hot and dry here. Last year we had storm after storm with hail and winds. I am just leaving mine as I am redoing my garden in the next couple of years so they will be moved to fresh well ammended soil. Maybe that will kick start them back into blooming. For me it is just a couple that is doing this....the rest are blooming fine.

Maybe add a little compost or composted manure next spring and make sure they are getting enough water. See if that helps....if not well.....I guess shovel prune and try another variety.

Sierra