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Top 7 DeepRoot Silva Cell FAQs for Contractors

1: Can Silva Cells go around utilities? Yes, our modules can be moved and oriented to accommodate most utilities, footings, and other obstacles. Integration with utilities is by no means a barrier to using Silva Cells! Silva Cells are designed to be completely structurally independent, meaning it is not necessary for them to be in… More

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Silva Cells Can Be Installed with (around) Existing Trees – Part II

Following our post about critical questions to ask prior to using Silva Cells with existing trees, the following are a few examples of successful applications in the USA and Canada. As with any root pruning operation we always recommend close consultation with a local certified arborist. Gallant Ave | Deep Cove | British Columbia This… More

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Mass Transit Tree and Stormwater Projects With Silva Cells

Over 580 trees and 15,578 Silva Cells (and counting) surround mass transit projects throughout the United States, Canada, and the United Kingdom. Mass transit projects include light rail trains (LRT), bus stops and their streetscapes along routes, interchange restructuring, major city center traffic hubs, and accompanying pedestrian and cycling-friendly pathways. Whether by foot, bicycle, electric… More

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The New Normal: A Silva Cell Case Study in Normal, Illinois

-Supporting and tripling the life expectancy of 67 trees, and helping to shape a sustainable identity for Normal’s Uptown Center: The Circle -The project won half a dozen awards and springboarded the city of Normal into a net positive economy. Halfway between St. Louis and Chicago, sits Normal, Illinois, a town of about 52,000 that… More

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How Much Soil Do You Need to Grow a Big Tree?

It seems pretty universal that everyone likes trees. We find them pretty, and calming, and they make us feel healthy. Space, pollutants and engineering requirements are all major factors that affect the growing conditions for urban trees. But other than picking a climate-appropriate tree, soil availability is one of the biggest elements in their success… More

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Silva Cell “Leeds” the Way in Sovereign Square: Case Study

Sovereign Square is the first significant redevelopment in Leeds City Centre in a generation. Seven years ago, the City of Leeds, a financial and legal hub in the UK, initiated the transformation of an industrial site to a green, urban oasis. Between Sovereign Place and Sovereign Street, the aptly named Sovereign Square has become what… More

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What Trees to Plant in Cities

Species diversity in the urban forest is an extremely important topic and – unlike so many other design choices that are hindered by lengthy planning processes, tightening budgets, and maintenance considerations – it’s something we can actually have an impact on in the short term as part of the ongoing cycle of tree replacement. I’ve… More

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What Not To Plant

Something simple and extremely fundamental must underpin any effort to increase the biodiversity of the urban canopy: adequate quantity and quality soil and water. That’s it. If a guy wanted to grow a great tree in a typical 4 x 4 urban tree opening, he could add macronutrients (NPK), micronutrients (Mn, Mg, etc.), compost tea,… More

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