The best soil type for an African Fern Pine (Afrocarpus falcatus) is well-draining soil that is rich in organic matter. It prefers acidic to slightly alkaline soil with a pH range of 5.5 to 7.0. It can tolerate slightly sandy or clay soils, as long as they are well-draining. It is important to avoid waterlogged soil or soils that are prone to compacting, as this can lead to root rot and other issues.