I grow a lot of sedum and other plants that grow in well-drained "poor" soil, and do not require a lot of fertilizer. In my case, adding compost might be a negative. One thing I did note in my sedum areas is that leaves fall on them and then decompose, and go to the root zone area-- from then they further decompose until next season. So-- they are adding compost on their own but just scant amounts. Just the devil's advocate here, saying not all plants want a lot of compost.
