Urban Soils - Research at Morton Arboretum

Over the past decade the Morton Arboretum has developed an intensive urban soils research program and  a wealth of information investigating the soils relationship to tree growth and health.  They are also a participant in the Urban Tree Growth & Longevity working group, and have an on-line curriculum for soils:  Introduction to Soil Science.

A summary Bryant Scharenbroch's latest research on improving urban soils with compost and hardwood mulch is here: "The Right Stuff", or  "Compaction and Remediation of Urban Dirt".