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Sentinel Plant Network Toolbox

Bartlett: Root Collar Disorders
The root collar is part of the tree’s trunk and requires the movement of oxygen and carbon dioxide in and out of the phloem (inner bark) to survive. Planting too deep or adding excess soil or...
Bartlett: Ticks
There are about seventy-five species of ticks in the United States, present in nearly all habitats. In most regions of the United States, the ticks most likely to be found on humans are the American...
Managing Oak Wilt Disease
Oak wilt is a lethal disease that affects all native oak species in the eastern half of the United States. The disease is caused by the fungus, Bretziella fagacearum, which colonizes the vascular...
BHS: Distracted Driving
Distracted driving is a leading cause of the increasing number of auto accidents and the severity of resulting injury and damages. Understanding how to avoid distraction and implementing best driving...
Bartlett: Needle Diseases of Conifers
Needlecast and needle blight are terms applied to a variety of foliage disorders of many coniferous species. These diseases are usually more severe on young trees or on trees growing outside of their...
Bartlett: Sonic Tomography
Sonic tomography, or the use of sound waves to detect decay in trees, is a relatively new technology available to arborists.  This technology uses the differential speed of sound as it moves...
PRE Pairing for Success: Emerging Invasives, Contentious Cultivars, and Common Ground
Meet the science-based, horticultural plant risk analysis tool that is good for business and the environment. Known as PlantRight “PRE” (Plant Risk Evaluator), this 20-question, online...
Sentinel Plant Network
Plant pests and diseases kill millions of trees, both in our neighborhoods and in natural areas. This damage has a negative impact on vital ecosystem services like clean air and water and costs...