Here is Part 3 of Peter MacDonagh’s series on the history of street trees in Holland. Things are starting to heat up! -LM The Low Country cities (which included both Holland and Belgium until 1830) went all in on the spice trade from the 1200’s forward. Most of these spices were harvested from the fruit… More
Here is Part 2 of Peter MacDonagh’s series on the history of street trees in Holland. Peter’s knowledge is incredible; I promise you don’t want to miss this unusual history of Holland through its trees. -LM The Low Countries, as one would guess, were perpetually wet – abounding with swamps, marshes and bogs. To increase… More
For today’s post, experts L. Peter MacDonagh and James Urban, FASLA tackle one of the most commonly asked questions we hear about whether tree stability is related to an evenly developed root ball. Here is what they have to say. -LM Without a completely developed root system on all four sides, won’t trees fail? What… More
Every Monday for the next five weeks, we’ll be running a blog entry by Peter MacDonagh about the history of street trees in Holland (to see Peter’s fantastic series on the history of street trees in Paris, click here). Peter’s knowledge is incredible; I promise you don’t want to miss this unusual history of Holland… More
Today’s post is by Alison O’Connor, Horticulture Agent with Colorado State University Extension in Larimer County. It originally appeared on her blog, Co-Horts, and is reprinted here with her permission. Thanks, Alison! -LM Unless you’ve been vacationing in southern France for the past few weeks, you know that Colorado has had an interesting spring. I’m… More
Alex Shigo, one of the most famous plant biologists and fathers of arboriculture, is widely credited with making huge improvements to standard industry practices. One of his famous sayings was an exhortation to “touch trees.” I’ve adapted this to my own related specialty, urban trees and soils, which is why I often tell landscape architects and other… More
A couple of years ago, I wrote hopefully about the City of San Francisco’s plans to revamp our main thoroughfare, Market Street. The project, which began in 2009 and planned to improve transit, pedestrian spaces, and business opportunities, represented a tremendous opportunity for Market Street to meet the grandness of its proportions. I hoped for… More
What do trees really need? Sunlight, surely. Water, and nutrients from the soil. But do they need pruning? Some trees are said to be self-pruning, shedding dead limbs or even overly heavy live limbs. Trees and plants have evolved for millennia without our intervention.
Earlier this year, I wrote about a study by Dr. Jessica Sanders, Director of Technical Services and Research at Casey Trees, that concluded that “apparent available soil” was a good predictor of ultimate tree size. Now, Dr. Sanders and two co-authors, Jason Grabosky and Paul Cowie, have published a complete version of their study in the… More
My generation, the millennials, has been described as politically apathetic many times and by many people. I’m not sure it’s an entirely fair characterization, but I do relate to a feeling of powerlessness when it comes to influencing policies and other types of fundamental changes. When I was a kid, my parents and teachers would… More
Read Part I of The History of Street Trees here. In the United States we have hockey season, football season, etc. Well, in the Middle Ages of Europe there was a war season. It was after the fields were sowed and through the summer until harvest. Lords (i.e., kings) would round up farm boys and… More
Need a lively discussion topic for the dinner table, a road trip, or a hot date? How about stormwater credits for trees?! A group of us started discussing the intricacies of how to set up a stormwater credit system for trees two summers ago, only to discover that the subject was even more “interesting” (both… More
Soil. Stormwater. Sustainable Infrastructure.
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