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When caught early, girdling roots should be cut to avoid future tree health and structural problems. But what should be done when girdling roots have grown larger?

Scientific research helps us debunk common tree myths and understand how to keep trees healthy and safe by understanding how trees work.

A handy, step-by-step checklist of considerations when preparing to plant trees.

A cursory look at an unhealthy tree may lead to some initial ideas of what is causing a decline in health, but a closer look may reveal other causes initially unnoticed.

If you can't see the trunk flare/root collar at the base of a tree, it may be buried, which can lead to decay and whole tree failure.

Online MyTree tools let you see what benefits your tree is providing to you and your community.

Woolly aphids often infest pairs of host tree species.

Good design and community input can help downtowns achieve an attractive and comfortable tree lined shopping district.

This quick-reference pocket field guide features assistance with implementing land-care practices that help meet landowner goals. Additionally, it offers information on improving woodland health, succession, and more.

A systematic approach to detecting and dealing with tree risk can greatly reduce the potential for tree failures that cause injury and damage to property.

Leaning trees should be inspected to determine risk to nearby people or property and any potential corrective actions.

This publication explains tree health and environmental considerations and details how to preserve trees.

Proper pruning of landscape trees improves their structural strength, maintains their health, enhances their beauty, and increases their value.

This manual will guide small-acreage owners through the process of implementing proper forestry and wildlife habitat improvement practices to enhance a property’s natural resources.

This publication explains managing damaged and other soils in built environments; planting site assessment and modification; tree planting and care; and calamitous damage.

This handbook outlines small-scale natural areas management services that green industry professionals, such as arborists and landscape architects, can adopt to expand the services their business offers.

Mulches are materials placed over the soil surface to enhance landscape beauty, improve soil conditions, protect plants from foot traffic and lawn equipment, and suppress weeds.

Gain skills to manage invasive plants in this full-day workshop on ID, control methods, sprayer calibration, herbicide mixing, and foliar application in natural areas and rights-of-way.

This seminar offers vegetation managers routine and up-to-date insights on plant identification and best practices, with control methods including mechanical, cultural, and chemical approaches.

This publication serves as a guide for municipalities on the planning and management of street trees, parks, and open space as important community assets.

Join other residents and start to restore and maintain the tree canopy in your community. During this workshop, you will learn everything you need to know regarding tree biology, identifying trees, pruning and root care, planting & more!

Select trees for planting in your towns and cities.

Community forests are made up of the trees, plants, wildlife, and water found in places where people live, work, and play together. People play an important part in their care.