Downloadable Resource: Soil Volume Calculator

Following extensive research with universities, colleges and academia throughout the world, GreenBlue Urban has produced the Soil Volume Calculator, available in print and online, giving a simple guide to the soil volumes required to get trees to chosen long term canopy diameters. Whilst not totally prescriptive – different tree species have differing nutrient requirements – […]

ArborSystem Specification

green blue

ArborSystem is the world’s leading complete urban tree planting package – providing an easy solution for specifiers and installers. It covers everything a tree needs to mature in an urban environment without damaging built infrastructure – including RootSpace uncompacted soil volume, RootRain irrigation and aeration, ReRoot / RootStop root management, ArborGuy rootball guying, and tree […]

Soil Cells vs Structural Soil: Analyzing Soil Under Pavement

What is the best way to promote tree root growth in the soil under a sidewalk? It’s a question that landscape architects, civil engineers, and arborists from cities large and small have investigated over many years. Through such consideration, alternate solutions to increase rooting volume for street trees have been created with varying degrees of success. In […]

Filler Soil Specification

Healthy soil is vital to tree health. A healthy growing medium is defined as an amended existing topsoil that contains organic matter, a typical clay content of ›25% by mass, is capable of sustaining vigorous plant growth, and complies generally with the typical uses of AS 4419 (2003). It should also be free from unwanted matter such […]

Downloadable Resource: The Process of Successful Tree Pit Design

Urban tree populations in cities around the world are on the decline. For over 25 years, GreenBlue has been assisting landscape architects and contractors with proven tree planting methods and best practice techniques to ensure the successful establishment of our urban tree populations. Now, having already made a decision on planting location and tree species, industry […]

PDF: Tree Roots in Soil Cells

tree installation

In July 2011, GreenBlue planted a Tilia cordata ‘Greenspire’ tree in a hard landscape paved area, as part of a training and research program. The tree was photographed during the planting process and the exercise was part of a detailed study into tree root morphology in root management products, and new root extension into uncompacted soil in structural cells.

A Guide to Successful Urban Tree Pit Design

The benefits that populations of healthy urban trees can create are significant, yet the environmental conditions found in urban spaces can often be a barrier to their successful establishment and long term survival. In order to provide urban trees with the best opportunity to survive and thrive, it is essential to consider the conditions of […]

The 7 Fundamentals of Tree Planting in Paved Surrounds

The purpose of this publication is to provide facts and guidance to persons involved in the decision-making process which is part of any urban tree planting program. Planting trees in hard surfaces requires careful planning and interaction between differing professional disciplines. The information in this book is drawn from many sources and is not least […]

Resource: Soil Requirements of Healthy Urban Trees

soil requirements

Trees require adequate supply of uncompacted, well aerated, and moist soil in order to thrive. These soil conditions enable tree roots to obtain all the essential elements they require for healthy growth – nutrients, oxygen, and water. They also happen to be the elements found in the soil of natural forest settings. In built-up urban areas […]

Health Benefits of Urban Trees

Few things can compare with the visual impact and seasonal interest that trees bring to an urban environment. Trees and green spaces foster community cohesion by creating a sense of place, a local identity, and a system of landmarks. Treed areas can provide space for leisure and community activities, helping residents to take pride in […]

Benefits of Urban Trees

urban forest

Over the last decade, the activities of charities and public sector organizations such as the Urban Tree Foundation and the Sustainable Sites Initiative have helped to put the creation of sustainable urban forests firmly on the agenda.  The aim, to inform politicians, policy makers, planners and landscape design professionals across the continent, of the true […]