Do you need ericaceous compost for Magnolia Stellata?

Yes, Magnolia Stellata needs ericaceous compost, but at the same time, no, it does not. The flowering plant in question prefers a slightly acidic to neutral pH level even though proper drainage and lighting let it survive in a variety of soils, including heavy clay. It therefore will have need of the acidic-loving, lime-hating compost in less desirable environments (where an ericaceous compost fertilizer helps), such as slightly alkaline (sweet) soils.