edaphic plant species

In botany, edaphic refers to soil, and an edaphic plant species is one that adapts to the physical, chemical, and mineral composition of a particular soil. The kind of soil in any area, therefore, determines which plants will thrive and which will not, a factor that is an integral part of the agricultural and forestry economy and that informs our understanding of how human activity affects plant and animal life. Some unusual edaphic plants are those that are adapted to the Siskiyou Mountains’ harsh ultra-mafic soils.