- Plant vegetables several inches away from the edges of the wood. The chemicals leaching into the soil cannot travel more than a few inches away from the source, so keeping vegetables away from pressure treated wood may help.
- Use sealants to keep chemicals from leaching out.
- Avoid cutting or sanding pressure treated wood, which exposes more surface area and chemicals.
- Replace pre-2004 wood, which may have been treated with arsenic, with newer products, or seal it with a wood sealant.
- University of California Division of Agricultural Sciences. Using CCA Preservative-Treated Lumber in Gardens and Landscaping.
- Tulare and Kings County Master Gardeners publication
- Linda Chalker-Scott, Ph.D., Extension Horticulturist and Associate Professor, Puyallup Research and Extension Center, Washington State University. The Myth of Protected Preservatives
Jeanne Grunert is a certified Virginia Master Gardener and the author of several gardening books. Her garden articles, photographs, and interviews have been featured in The Herb Companion, Virginia Gardener, and Cultivate, the magazine of the National Farm Bureau. She is the founder of The Christian Herbalists group and a popular local lecturer on culinary herbs and herbs for health, raised bed gardening, and horticulture therapy.