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At DeepRoot, we promote large volumes of non-compacted, biologically active loam as essential for street tree health and longevity. Back in 2014, we wanted to recognize the municipalities that were rethinking the vital role trees play in the health of our planet and population, by creating a comprehensive list of soil volume minimums for cities and states in the US and Canada. Since then, there have been 15 additions and amendments to soil volume minimums across North America. Today we’re happy to share that we’ve updated this table for 2020.

Urban foresters generally adhere to the following minimums: 300 cubic feet for small trees, 600 cubic feet for medium trees, and 1,000 cubic feet for large trees.

In the table below, you can organize the information by different criteria such as city, state/province, country, and soil volume.