Soil and Water Management
Physical soil
Know texture (sand, silt, clay proportions), structure (aggregation), and pore space. A productive soil is roughly half solid and half pore space, with macropores for air movement and drainage and micropores for water retention. Bulk density above roughly 1.4–1.6 g/cm³ in loam-textured soils begins to restrict root growth, and compaction collapses macropores first, so roots lose oxygen before they lose water.
Chemistry and biology
Cation exchange capacity, pH, organic matter, and the biological community (including mycorrhizae) govern nutrient supply. Organic matter improves structure, infiltration, and water-holding capacity simultaneously, which is why it is the most reliable amendment in a planting bed.
Water
Separate infiltration, percolation, field capacity, and permanent wilting point. Clay stores the most total water, but much of it is tightly held and unavailable. Irrigation should be deep and infrequent to encourage deep rooting; frequency is set by evapotranspiration and soil, not by a fixed calendar.
Traps
Light daily watering produces shallow, drought-fragile roots. Runoff does not equal infiltration; hydrophobic or compacted soils may shed water applied too fast. Wilting that recovers by evening is often midday heat stress, not drought. Mulch belongs 2–4 inches deep and pulled back from the trunk.
Worked example
One inch of water over one square foot is about 0.62 gallons. A 10 ft × 10 ft root zone (100 ft²) therefore needs roughly 62 gallons to deliver one inch. Apply that slowly enough to infiltrate, then wait until the soil dries before repeating.