Revitalizing Raised Bed Soil: Organic Matter, pH Adjustment, and Green Manure

Why Raised Beds Decline

Over 2‑3 years, organic matter breaks down, soil compacts, drainage slows, and pH drops. This creates physiological stress, not necessarily disease.

Annual Amendment Routine

• Add 1‑2 inches of coarse organic matter (pine bark, compost, manure) per 30 sq ft each year.
• Target pH 6.5; sulfur lowers pH, so test before adding more.
• Plant a fall green manure (annual ryegrass) to be turned under in spring.

Crop Rotation

Rotate vegetable families annually to reduce disease buildup. If whole bed performs poorly, it’s likely a soil‑structure issue, not a pathogen.