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Soil Volume Minimums for Street Trees Organized by State/Province

At DeepRoot, we promote large volumes of non-compacted, biologically active loam as essential for street tree health and longevity. 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. However, some municipalities are taking soil volume cubic feet… More

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Using Silva Cells with Green Roofs and On-Structure Applications

DeepRoot’s Silva Cell has been installed in dozens of rooftop projects around the world. Whether it is on top of existing structures such as parking garages, or a garden terrace atop a new construction project, Silva Cells can help create structure, bio-retention for tree roots wherever installed. There are two types of green roof installations,… More

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Using Silva Cells with Green Roofs and On-Structure Applications

DeepRoot’s Silva Cell has been installed in dozens of rooftop projects around the world. Whether it is on top of existing structures such as parking garages, or a garden terrace atop a new construction project, Silva Cells can help create structure, bio-retention for tree roots wherever installed. There are two types of green roof installations,… More

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UK Soil Volume Status for Urban Trees

Trees do a tremendous amount for our communities in a number of essential ways. Unlike a streetlamp or a water main, their influence is diffuse— they affect everything from air and water quality, to flooding, to temperatures, to property values and incidence of crime. Urban trees are under more pressure and facing greater challenges to… More

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UK Soil Volume Status for Urban Trees

Trees do a tremendous amount for our communities in a number of essential ways. Unlike a streetlamp or a water main, their influence is diffuse— they affect everything from air and water quality, to flooding, to temperatures, to property values and incidence of crime. Urban trees are under more pressure and facing greater challenges to… More

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Horticultural Myths Exposed

Horticulture is the art of cultivating. Garden herbs, plants, produce, flowers, fruits, nuts, and trees all fall under the horticulture category. The common denominator in all of these is soil. One of DeepRoot’s favorite industry leaders and researchers of healthy soil and effective horticulture is Dr. Linda Chalker-Scott. Dr. Chalker-Scott is an Extension Urban Horticulturist… More

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Horticultural Myths Exposed

Horticulture is the art of cultivating. Garden herbs, plants, produce, flowers, fruits, nuts, and trees all fall under the horticulture category. The common denominator in all of these is soil. One of DeepRoot’s favorite industry leaders and researchers of healthy soil and effective horticulture is Dr. Linda Chalker-Scott. Dr. Chalker-Scott is an Extension Urban Horticulturist… More

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Trees Are a Tool for Safer Streets

The World Health Organization reported in 2004, “Road crashes are the second leading cause of death globally among young people aged five to 29 and the third leading cause of death among people aged 30 to 44 years.” That’s a scary statistic. Rumble strips, speed bumps, and speed limits are a few of the traditional… More

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Silva Cell’s Support 167 trees in Downtown Minneapolis: A Case Study

– Silva Cells solved the 2009 CSO stormwater transition during the Marquette and 2nd Avenue (MARQ2) busway project, mitigating stormwater runoff. – Over 167 trees were installed along 48 blocks of downtown Minneapolis each with 588 ft3 (16.6 m3) of soil volume. – Above ground, the trees provide shade, clean air, and beauty. Below ground,… More

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Our Recommended Soil Volume for Urban Trees

We have a lot of resources about implementing minimum soil volumes for urban trees on this blog. Recently we’ve updated our list of municipalities that have a minimum soil volume standard. Trees need an adequate volume of root, oxygen-rich soil to thrive, and minimum soil volume policies are a powerful tool for arborists and other advocates… More

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