Spring Soil Amendment for Established Perennial Beds

If perennials are thriving, extensive amendment is unnecessary. Focus on targeted improvements.

When to Amend

Bagged manure: Low fertility; primarily improves texture. Use composted, not fresh.
Triple mix: Verify contents; ideally a blend of loam, compost, and sand.
Duck manure: Must be fully composted (6+ months) before garden use to avoid pathogens and nitrogen burn.

Topdress beds with 1–2 inches of quality compost annually. Till only when planting new specimens. Maintain your existing fertilizer program.

Soil Issues: Fixing a Tomato Garden Ruined by Fresh Horse Manure; Amending Clay Fill Soil for Long-Term Garden Health; Solving Standing Water in New Garden Beds; Milorganite vs. Composted Manure: Which Is Better for Flower Beds?; Evaluating Fire-Affected Horse Manure for Garden Use; Compro (Biosolids) for Lawns: Benefits, Risks, and Dog Safety; Amending Clay Soil Under Existing Lawn: Earthworm-Friendly Approach; Using Aged Horse Manure Safely for a New Lawn; Choosing the Right Manure for Lawns and Gardens: Cow vs. Horse; Fixing a Failed Garden: Ditch Cheap Topsoil, Amend With Conditioner, Lime, and Fertilizer

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