Keystone Tree Experts

Proudly serving our community since 1968

Keystone Tree Experts supplies horticultural expertise through a staff of very experienced certified arborists and technicians. Our customers, in turn, receive the peace of mind that comes from dealing with a knowledgeable, responsive company that has earned an impeccable reputation for fairness and honesty since 1968. So, if you’re looking for a long term relationship with a tree and shrub care company, look no further!

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Our Services

Keystone offers a wide array of services to residential and commercial clients, condominiums/HOA’s, landscape contractors, nurserymen and other arborists. We pride ourselves in educating others about problems that affect trees and shrubs. We routinely work with landscapers to help maintain properties, garden centers to help educate do-it-yourselfers and property owners who recognize the importance of maintaining their trees and shrubs.

Plant Health Care Programs

Yearly tree and shrub care maintenance plan provides seasonal monitoring, early detection, diagnosis and professional treatment.

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Insect and Disease Control

Seasonal monitoring and custom programs to suppress insects and diseases utilizing the latest practices of Plant Health Care (PHC).

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Fertilizing

Our fertilization program provides regular applications of essential nutrients to improve plant vigor while encouraging growth.

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Small Tree Pruning

Our pruning program removes dead wood, corrects weak branching habits and reduces wind resistance – all crucial for their continuing health and vigor.

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Consulting

Our certified arborists help with landscape installation, pre-construction tree protection or the planning, development and maintenance of your property.

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A Family Business

Bob and Lynne McMullin

Keystone Tree Experts is a family-run business built on generations of knowledge, trust, and a genuine commitment to the community. Founded by Bob McMullin in 1968 and now led alongside his daughter, Lynne McMullin, the company combines decades of experience with a personal, family-driven approach to caring for the trees and landscapes of Bucks County.

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Meet our ISA Certified Arborists

We Have “EXPERTS” In Our Name for a Reason!

MORE ABOUT THE TEAM

    
 
 
       Posted on Google  
    Sally 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have been very happy with the work that Keystone Arborist has done for us.  They have removed very large trees and a very large stump for us..  They clean up beautifully and place mats in our yard to use for their equipment and protect our grass.  We will certainly use them again for any tree service we need done.
  
 
      Posted on Google  
    Mike Kirk 
 
 
 
 Trustindex verifies that the original source of the review is Google. If you need a reliable tree service call Keystone!  They are fast, efficient, and a pleasure to deal with.  They have saved several of my large oak trees from the leaf scorch that has been plaguing the oaks.  Also sprayed and saved a number of my evergreens.
  
 
      Posted on Google  
    Carla Foy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Joe comes out every year to inspect the trees on my 2 acre property.  Joe recommended a treatment for one of my Ash trees several years ago, and it has saved the tree!  I think these guys are fantastic, and I highly recommend them if you want to keep your trees healthy.  My motto is tree treatment is a lot less expensive than tree removal, so I try to treat and keep them healthy with Keystone Tree Expert's help.
  
 
      Posted on Google  
    Carol Kurtz 
 
 
 
 Trustindex verifies that the original source of the review is Google. For starters, Keystone always gets back to me when I call.  Their technicians are the best and offer advise when asked and offer suggestions as to what may be  needed to maintain your trees. I have used Keystone for 12 years and have never had a complaint about their service.  They are punctual, courteous and the best in the field.
  
 
      Posted on Google  
    Allison Rae 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have been taking care of my property for 30 years.  My house is 2 yards from a very busy road so my trees and shrubs are critical to both privacy and safety.  My friends tease me that I have a garden with a house on it.  I have seen my share of arborists come and go.  After feeling bamboozled more than once, this time I conducted a thorough search and interview process, comparing assessments and pricing of about 5 companies.  Keystone did not try to sell me services I did not need, they showed me issues the others missed and their pricing was the best.  They have been no nonsense and are showing me, not telling me, that they are truly experts.
  
 
      Posted on Google  
    Andrey Sapir, EA 
 
 
 
 Trustindex verifies that the original source of the review is Google. Always excellent service with Keystone!
  
 
      Posted on Google  
    Barbara Schuster 
 
 
 
 Trustindex verifies that the original source of the review is Google. They knew what the problem was with my tree and how to help it. Very easy to talk to and professional.

Keystone Tree Experts