Ancient survivor This tree (Pandanus tectorius) has many names, including Hala and Screw-pine, but my favorite is Tourist Pineapple, because the fruits fool unsuspecting visitors. This primitive plant is found in fossil records all over the world, including as far away as Europe. It was assumed to be an introduced plant in Hawaii until a… More
Silva Cells were originally developed to provide adequate tree rooting volumes even in areas dominated by pavement. They do this by extending rootable soil volume under HS20 load bearing surfaces. These rootable tree volumes and the large trees that root in them are also an efficient sustainable stormwater management system. Sometimes people ask us if… More
Today’s blog entry is reprinted testimony from Dr. Franco Montalto, PE, given to the New York State Assembly Standing Committee on Environmental Conservation at a public hearing on the environmental causes and effects of extreme weather events. The testimony was given on January 13th, 2013 and originally appeared on SwimmableNYC’s blog. Dr. Montalto is an… More
Disturbance to pipes and sidewalks caused by roots is one of the most commonly cited complaints about trees. One of the many questions I get asked about is whether they penetrate and plug up drain pipes frequently. The answer – perhaps surprisingly – is no.
There are many advantages to using permeable pavers over Silva Cell installations. The two biggest are maximizing stormwater volume, rate, and quality benefits, and minimizing installation and maintenance labor requirements. In today’s post, I’ll be discussing these two stormwater benefits (as well as a few extras!) in more detail.
Hey, Philadelphia-area readers! James Urban, FASLA will be presenting his “Up By Roots” seminar at the Morris Arboretum at the University of Pennsylvania on Wednesday, April 17th from 9am to 4pm.
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’ve run for once a… More
I have been wanting to write about the history of street trees. When I sat down to begin my research, I started in the usual place: Google. Then, because I’m a landscape architect, I looked at my reference books on the history of landscape architecture, urban planning, street trees, and horticulture. I didn’t find much… More
A few weeks ago, non-profit American Forests released their list of the 10 Best Cities for Urban Forests. Many deserving cities made the list, but to me it seemed like something important was missing from the judging criteria.
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
Soil. Stormwater. Sustainable Infrastructure.
Request a Quote [email protected]
Tel: 415 781 9700
Toll Free: 800 458 7668
Toll Free: 800 277 7668
Fax: 415 781 0191
