William Johnston & Co., Inc.

Phone: 610-664-3200


Services for Trees:


Tree Pruning


Tree Removals




Shrub Renovation


Emergency Storm Damage

Plant Health Care:


Spray Services: Insect and Disease Control


Fertilization Treatments and Soil Amendments


Plant Growth Regulator and Trunk Injections


Deer Repellant Treatments and Anti-desiccant Sprays

Evaluation Services:


Test Bore Evaluations


Hazardous Tree Evaluations


Root Crown Excavations

Contact us


Fertilization and Soil Amendments


Some tree care companies have a "one size fits all" approach to feeding trees or shrubs.  They simply advise fertilizing everything once or twice a year.  This is a very antiquated way of thinking.  We address specific deficiencies in the soil that are relative to your individual property.  Often, a chemical soil analysis is recommended to ascertain exactly what your soil needs are.

Additionally, we tend to not rely on nitrogen as the basis for our soil amendments.  Although nitrogen has is benefits, we believe it is vastly overused, and should be applied only when needed.

For this reason, we focus on an approach that uses bio-stimulant products and add the specific micro-nutrients that your soil requires.  As a result, you will notice a healthier appearance and growth of your trees and shrubs.  Root feeding also provides greater protection from insect and disease problems and increases drought tolerance.



Bartlett Tree Experts

William Johnston & Company is proud to be a division of Bartlett Tree Experts, and our staff now has the backing of an international tree-care company and tree research laboratory to help continue providing excellent tree service and shrub care in the Philadelphia and Main Line areas. View a complete list of professional tree services offered by Bartlett.