Many factors affect tree health. Are they all equally important or are some more important than others? According to Kim Coder, PhD, Professor of Tree Biology & Health Care at the University of Georgia, soil compaction is by far the biggest constraint on tree growth. In a 2007 paper, he wrote, “Soil compaction is the most… More
A press release was issued by the Morton Arboretum that discussed their use on a product containing beet juice to deice roads and trails. The mixture is quicker and less toxic than using salt alone. It sounds like a joke, but it’s not. Beet juice is actually used as an additive and spreader for salt,… More
Readers on the West Coast may already be aware of this, but Stanford University has one of the oddest mascot’s in collegiate sports: a tree.
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
Everyone loves the changing colors, but until recently I didn’t know why it happened. There are three primary factors that affect fall color: the length of the day/night, weather, and leaf pigments.
Biodiversity in the urban forest is incredibly important to resilience and long-term planning. To help designers start thinking about ways to increase diversity, we’re starting a series on some of our favorite species. Many of the species included will be underused. Some may not be underused, but included anyway because they have so many great… More
There are now dozens of open-source tree maps in communities worldwide. The most successful mapping projects are those that provide citizen scientists with simple guides on how to accurately identify tree species and assess tree health. The more accurate the information on the tree maps, the more accurate the green infrastructure calculations they produce – and the… More
The other day, I passed a dead street tree in San Francisco. Not an uncommon occurrence unfortunately, but this tree had once been on TV. The tree, a Paradox walnut, had been planted along with a second tree next to it as part of an art/science project called OneTrees designed by Natalie Jeremijenko. Jeremijenko cloned… 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
How do you assemble DeepRoot Tree Root Barriers? The video below demonstrates the simple lock-together process, showing how the panels connect for installation. For product information and additional installation resources, visit our Tree Root Barriers page.
Fossils are pretty amazing. These ghostly remains contain incredible detail about the ancient living things that accidentally created them. An article in the Wall Street Journal about the discovery of 385 million year old forest fossils got me wanting to know more about some of the most eerie, lovely specimens.
Just 8 blocks from Central Park, 20 trees with healthy soils and room to grow, will join the concrete jungle of New York City at 1271 Avenue of the Americas. A superlative example of mid-century modern architecture, 1271 Avenue of the Americas is an iconic Midtown Manhattan building with a rich history. Designed by Harrison,… More
Soil. Stormwater. Sustainable Infrastructure.
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