Agave thrives in well-draining soil and prefers sandy or rocky soil with low fertility. Therefore, the best soil type for Agave is a well-draining, sandy or rocky soil with low fertility. It is important to avoid heavy clay soils that retain water as this can lead to root rot and other diseases. A pH range of 6.0 to 7.0 is ideal for Agave. They can also tolerate slightly alkaline soil.