Containers & Soil Science
Understand how roots, pores, particles, containers, and components change growing-media behavior.
Start with the main decision, then use the supporting questions.
Cornerstone guides explain the complete decision. Supporting guides answer the narrower depth, quantity, comparison, troubleshooting, or process question without repeating the whole topic.
Cornerstone guidance
The strongest overview for this topic and its next decision.
Supporting guides
Why Potting Soil Stays Too Wet
A pot can remain wet because of the medium, container geometry, drainage openings, irrigation, weather, crop uptake, or several factors together.
Read guide →Why Roots Need Air
Roots need both water and oxygen. A root zone can contain plenty of water and still perform poorly if air exchange is inadequate.
Read guide →Air Space vs. Water Holding
Neither maximum air nor maximum water is the goal. Plants need a balance appropriate to the crop and production system.
Read guide →Why Particle Size Matters
Two mixes made from similar ingredients can behave differently when their particle-size distributions differ.
Read guide →Why Container Height Changes Growing Media
A medium that works in a tall container can remain proportionally wetter in a shallow container.
Read guide →Peat vs. Coir
Peat and coir are both growing-media components, but they are not interchangeable merely because both can hold water.
Read guide →