This episode covers soil texture, soil structure, and pore space for the ISA Arborist Certification Exam. These physical soil properties determine how water and oxygen move through soil and explain why roots thrive in some soils and struggle in others.You’ll learn the differences between sand, silt, and clay, why soil texture does not change, and how soil structure and pore space can be improved or destroyed. This episode explains compaction, drainage behavior, and root growth from a physical soil perspective.This episode is part of a comprehensive ISA Arborist Certification study podcast series designed to build exam-ready understanding of soils and water, one concept at a time.

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