Bev, I can honestly say that all my semps are grown under the same conditions, Hot and dry in the summer (full sun) and wet and cold in the winter/spring. The only ones I have had problems with were in old beds that became compacted and the beds were also to shallow for our high winter/spring water table. Once that was remedied I have not had any problems. Even with Lilac Time, which I was going to get rid of because she rotted ever winter/spring. Not anymore.