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Is ACQ-Treated Lumber Safe for Vegetable Garden Beds?

Modern cedar has little more rot resistance than pine. ACQ (alkaline copper quaternary) has no known safety controversy. Risk assessments (Human Health Risk Evaluation of ACQ-Treated Wood; Effects on Wetlands) conclude low risk. I built a raised bed with YellaWood (ACQ) and am comfortable using it for vegetables.

raised bed built using ACQ lumber

About Gardening: Safety of Pressure-Treated Wood for Raised Vegetable Gardens; Backyard Safety Check: Decks, Sheds & Structures After Winter; Wood Horse Fencing: Safety, Durability, and Material Selection Guide; Is Pressure-Treated Lumber Safe for Raised Garden Beds?; Using Cedar Sawdust in the Vegetable Garden: Effects on Germination and Soil Moisture; Fungus in Pressure-Treated Wood: Structural Decay, Not Surface Growth; Is Treated Lumber Safe for Raised Vegetable Beds?; Timbersil: Glass-Treated Wood for Raised Beds; Pressure-Treated Lumber in Vegetable Beds: ACQ and MCA Are Safe; Safety of Pressure-Treated Wood in Gardens: Arsenic Leaching Concerns

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