Quotes

Ask Jim: “Are Silva Cells limited in their soil volume?”

Here is this week’s “Ask Jim Urban” column. Jim Urban, FASLA is an expert on urban trees and soils and his recent book, Up By Roots, is the industry bible on these topics. Jim was also involved in the development and design of the Silva Cell system. In this column, which we’ll be running once a… More

Read Article

Ask Jim Urban: “Aren’t Silva Cells proprietary?”

Today I’m very excited to introduce a new feature on the blog called Ask Jim Urban. Jim Urban, FASLA is an expert on urban trees and soils and his recent book, Up By Roots, is the industry bible on these topics. Jim was also involved in the development and design of the Silva Cell system…. More

Read Article

What is Soil Organic Matter?

For the last two weeks of December I’ll be reprinting some of our favorite blog posts instead of putting up new ones. These will be on those evergreen topics that we can always revisit and apply to current projects. As this year winds down, hopefully some of these will be helpful as you plan for… More

Read Article

How Deep Do Tree Roots Really Grow?

Our 2010 blog entry by James Urban, FASLA, on the topic of how deep tree roots grow is consistently one of our most popular. Obviously there is a curiosity about this topic and a need for useful data about it. But the original post is a little technical and not as image-heavy as we’d like. So… More

Read Article

Why You Don’t Need To Replace Organic Matter In Soil

  As an urban trees and soils consultant, I am always looking for studies that examine how trees survive and adapt to the built environment. One of the biggest questions and confusions I encounter is the issue of whether organic matter (something that I discussed in a previous post) needs to be added to urban… More

Read Article

Comparing twigs from trees grown in Structural Soil with trees grown in Suspended Pavement

Comparing Silva Cells and Structural Soil

We get asked to compare Silva Cells to CU Soil with some frequency. It’s a comparison that we always hesitate to make, because to us it’s really a case of apples and oranges. While they may seem to be solutions to the same challenges, there are some very significant differences that affect their value and performance for tree growth… More

Read Article

How Deep Do Tree Roots Grow?

Click here for a general overview of the factors that influence how deep tree roots grow. Or, continue reading below to dig in to the science a bit deeper. By James Urban, FASLA Here’s an objection we face a lot when working on Silva Cell projects: “Tree roots don’t grow more than 24″ (65 cm)… More

Read Article

Minimizing the Effects of Salting on Urban Trees

In areas where it snows and freezes, salting is a frustrating reality of the road. Salt used for melting ice on pavements in northern climates is quite harmful to trees and soil. The most common and least expensive form of ice melting salt is sodium chloride, which is the same salt we put on our… More

Read Article

Join Our Newsletter

Sign up to our newsletter to stay up-to-date on news, updates, and product information.

Explore blog by category