Is Landscape Timber Treated

Currently, wood purchased at lumber outlets for residential landscapes is treated with micronized copper azole (CA) or alkaline copper quaternary ammonium (ACQ). … However, landscapes still have treated lumber from the days of copper, arsenic, and chromium use.

Are landscaping timbers treated?

Most of the landscaping timbers currently sold for use in the home landscape are treated with less-toxic solutions that contain copper and boron, such as ACQ, which stands for alkaline copper quaternary.

Are landscape ties pressure treated?

Regular lumber begins to break down within the first year if it comes in contact with the soil, so many gardeners used to use pressure treated wood for gardening, such as landscape timbers and railroad ties, which is chemically treated to withstand the weather.