The Beginner's Garden with Jill McSheehy · Jill McSheehy

422 - The Truth About Soil, Wood, and Raised Beds with Gardener Scott

·41 min·3 clips

Gardener Scott shares Oregon State's study proving pressure treated wood is safe for raised beds.

This episode features Jill McSheehy interviewing Gardener Scott, an experienced gardener and author, about practical raised bed gardening topics. They discuss common questions and misconceptions gardeners face when starting or maintaining raised beds. Scott shares insights from his book, "Gardener Scott's Guide to Raised Bed Gardening," and his experience as a Master Gardener. Scott explains the differences between using GreenStalk vertical planters and traditional raised beds, noting he prefers herbs like basil in GreenStalks but tomatoes in raised beds. He references an Oregon State University study on pressure-treated wood, which found minimal copper transfer to soil and no significant plant impact. Scott advises wearing gloves when handling fresh pressure-treated lumber but considers it safe for garden use. The conversation covers soil composition, emphasizing the need for both mineral content from native soil and organic matter like compost. Scott warns against using 100% compost, as it lacks structure and will decompose rapidly, causing soil level drop. He describes amending his poor Colorado soil by digging holes to mix native soil with organic amendments, effectively improving both his raised beds and in-ground areas. The discussion touches on biosolids, with Scott explaining they are treated sewage sludge sold as soil amendment. He addresses concerns about pharmaceuticals in biosolids, suggesting microbes and environmental factors likely break them down over time. Scott highlights a common beginner mistake: assuming raised beds automatically solve gardening problems without focusing on soil quality. He notes raised beds can increase yields by 40-60% over in-ground gardens due to better soil and efficient planting layouts. Scott shares his personal gardening approach, using raised beds for food production and in-ground areas for pollinator gardens and landscaping. The episode has an educational and conversational tone, blending personal anecdotes with research citations. Listeners interested in practical, science-based gardening advice and soil management will find this episode valuable. Those seeking highly technical or purely ornamental gardening content might find the focus on vegetable production and soil amendments less relevant.

As heard by us

Raised-bed advice that turns soil myths into practical, beginner-level decisions.

Raised beds get a practical checkup here, with Jill McSheehy and Gardener Scott sorting through 100% compost, pressure treated wood, and the best planter setup when space is tight.

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Why you'd press play

You want a straight answer before you buy soil or lumber.

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