Treated lumber is commonplace in many raised beds used for vegetable gardening.
Raised bed using rocks (instead of wood) for structure (Photo: Beth Wilson, UK)
Beth Wilson
Pulaski County Extension Agent for Horticulture
As you re armchair gardening this winter, you may be considering constructing a raised bed. Many times, lumber is the first material we think of to construct them.
Due to its excellent decay resistance, treated lumber is commonly used in situations where wood will be in contact with soil. In the garden, there are many instances where this is common: bed borders or trim, support for raised beds, plant stakes, and compost bins.