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Geoffrey Thill, Arborist Representative
Geoffrey Thill, Arborist Representative at Bartlett Tree Experts, works out of our Annapolis, MD office.
More about Geoffrey Thill
Geoffrey began working for a local landscape company in his hometown of Stevens Point, WI while still in high school. From there his passion for trees led him to study at Mid-State Technical College and the University of Wisconsin Stevens Point, where he earned an Associate's degree in Urban Forestry and a Bachelor's of Science in Forestry. Geoffrey has been working for Bartlett Tree experts since 2005, where he started as an intern. Over the years Geoffrey has gained knowledge through hands on experiences in pruning, soil care, and the diagnoses and treatment of trees and shrubs for insects and diseases. Geoffrey is an ISA Certified Arborist, a Maryland Licensed Tree Expert, and a Maryland Certified Pesticide Applicator. In his spare time, Geoffrey is an avid swimmer. He coaches youth swimming lessons at the local YMCA, and is an active volunteer and member of the Masters Swim Team. He especially enjoys open water swimming and has competed in the 4.4 mile Great Chesapeake Bay Swim.

What Our Customers Are Saying About Geoffrey Thill
Cannot think of any reason to make it better. Everyone we work with are very professional and knowledgeable. Our trees have been doctored and then pampered by Bartlett Trees for a few years, now. The results are amazing.
Terri M., Glen Burnie, MD
My interactions with the Bartlett representatives, crew members, and staff has been excellent. I hope this excellence continues in the future and have no reason to believe that it would change. Thank you very much.
Mona H., Pasadena, MD
Geoffrey Thill is our Arborist Representative. He is a delight to work with. He is friendly, knowledgeable, and thorough. He is prompt in scheduling the work and in its completion.
Mary T., Hanover, MD
I can not think of any way to improve service. Staff called before visiting and are courteous and professional. They listen to concerns and provide recommendations. They are a pleasure to do business with.
Sheila K., Severn, MD
Extremely safe and professional. Geoff has done a great job at answering our questions and concerns.
Brian L., Pasadena, MD
Can not think of anything, your service is great.
All staff members are courteous and professional, making it a pleasure to do business with Bartlett.
Sheila K. , Severn, MD
We are extremely happy with the advice that Geoffrey Thill has provided us. We highly value his expertise and his professionalism. He is a pleasure to work with.
Vicki B., Glen Burnie, MD
From the moment Bartlett was contacted to job completion it was obvious that they knew what they were talking about. Work was done very efficiently and in a timely manner. I would not hesitate to recommend them.
Linda S., Severn, MD
Had an excellent conversation with Geoffery during the initial consultation, could easily tell he was passionate about his work and very willing to sit and talk trees for a minute to make sure I did not have any questions or concerns. The team that did the work showed up and got right to it after checking in with me, highly efficient and did a fantastic job.
Gunnar J., Severn, MD
The experience was perfect. Your staff listened to my concerns and did a great job pruning my trees. Thank you for great service and Happy Holidays. Geoffrey Thill provides excellent customer service. He provides guidance, recommendations, and is responsive to inquiries. He is an asset to Bartlett tree Service.
Sheila K., Severn, MD
Geoff and staff were very professional both in person and on the phone. All requirements of the jobs were clearly explained including scheduling Miss Utility.
After getting three other estimates for removing two Pine trees and grinding both stumps, Bartlett was the most knowledgeable, professional, with comparable pricing.
Anne R., Odenton, MD
The staff that come out to my home to do the actual work have all been fantastic at what they do, friendly, and courteous.
Very happy with the service. They healed my Cherry blossom tree.
Donna B., Hanover, MD
I emailed Geoffrey and requested to remove the dead tree in our yard in preparation for our lawn renovation project. He came the same day and assessed the cost. He was very responsive with my email inquiry. We are very impressed with his expertise and professionalism.
I would highly recommend Bartlett for any tree service needs.
Marie S., Odenton, MD
Hi Geoffrey, I have been meaning to send you this email for some time now, but time just got away from me. Jerry and I want to share with you just how pleased we were with the work your tree crew, John, Juan and Rigo, did for us on July 19th, 2022. They were absolutely awesome. They were professional, courteous, and went above and beyond to make sure that we were totally pleased with the work that they had done for us the day before they left. We also like to thank you Geoffrey for your quick response in getting back to us whenever we call you for service. Your knowledge in caring for trees is evident and you represent your company extremely well and we appreciate you. We have been in our house for over thirty four years and throughout the years we have dealt with many different tree companies. This past spring we started using your company and Bartlett Tree Experts has been the best tree company we have ever dealt with. The tree crew that came out in May when we needed an emergency tree removal were outstanding. We will continue to refer your company to our family and friends. It is so nice, especially these days, to see such great customer service. Kudos to everyone at Bartlett Tree Experts.
Diana and Jerry R., Gambrills, MD
We had a large Red Maple that was encroaching on our and our neighbor’s roof. We needed a lot trimmed back, but wanted to maintain the integrity of the tree. Our tree technicians were so kind and professional, and did a great job. We were 100% satisfied with Bartlett’s work and will gladly have them back should the need arise.
Rachel J., Gambrills, MD
Geoff is amazing. He is knowledgeable and efficient in his visits. He also provides follow up observations to make sure treatments are working. Thank you.
Randy R., Linthicum, MD
Bartlett is top notch in our book. We will readily recommend them to anyone we meet who needs like services.
Geoff is friendly, timely, thorough, professional, and very knowledgeable, everything one would want when consulting a specialist in this field. We could not be more pleased and look forward to many more years of working with him and Bartlett.
Mary T., Hanover, MD
It was all good. The arborist is always wonderful, lots of excellent knowledge, and full of helpful information.
Barbara T., Gambrills, MD
We had a great experience with Bartlett Tree Experts. Geoff was awesome and kept me informed every step of the way. I would highly recommend this company.
Jeanarta A., Odenton, MD
Exceptional customer service from Geoffrey. He took the time to answer all of our questions, quite a few, about tree care and the services provided by Bartlett. He provided recommendations for every tree on our property and explained the details of each treatment option. This is customer service done right.
Robert R., Pasadena, MD
Bartlett Tree Experts,
Thank you for the excellent work done by Geoffrey and Casey on our Red Maple tree and nine evergreen trees.
Geoffrey was excellent in assessing our needs and offering a realistic charge. Casey worked very hard in removing the mangled roots on our Rep Maple Tree and then returning our front lawn to its original good appearance.
We will surely recommend your Company to family and friends who need tree services.
Jim D., Odenton, MD
Geoffrey, was very knowledgeable as to the needs of my trees. Since consulting with him, the trees are on a path to recovery.
Hattie B., Odenton, MD
Great interaction with Geoffrey, had a really substantive discussion about what was needed for the trees in our yard. Geoffrey took his time to look at everything and provide an explanation of what was needed. The other crews that came out were professional, respectful of our property, willing to answer questions, and provide an explanation. Thank you. Keep doing what you are doing, it works.
Jan K., Hanover, MD
Friendly and knowledgeable. Provides information that is understandable to the customer. Great person to deal with. A great representative of your company.
Charles B., Glen Burnie, MD
All Bartlett personnel who came to my home were great. They were pleasant, informative, and patient with me. I was able to watch them work and I am highly pleased with their professionalism as well as their knowledge and experience for tree removal without damage to either my property or my neighbors. Another member of their team came out to spray chemicals on the tree to help keep the harmful insects, to my tree, at bay.
I have a Maple and an Oak tree remaining on my property. I am hoping for many years of support from Bartlett regarding the health and upkeep of both trees.
Paul M., Glen Burnie, MD
Extremely pleased with the professionalism and quality of the work.
Julie M., Odenton, MD
I have used these experts several times from cutting down trees to fertilizing and would highly recommend them. They may be a little pricey but you only get what you pay for as I have found out with other companies. They are extremely knowledgeable and professional. You will not be disappointed.
Lisa M., Linthicum, MD
Everyone I have been in contact with has been very helpful and interested in my problems with my trees.
Geoffrey is always there to answer all my questions.
Gloria L., Glen Burnie, MD
Jeff is awesome and the reason I stay.
L. King., Glen Burnie, MD
Excellent crew and staff. Definitely would recommended your services to other individuals.
David T., Severn, MD
The entire experience was exceptional from the initial estimate by Geoff to the completion of work by Sasha and his coworker. I felt like everyone cared about me and my project.
Barbara S., Glen Burnie, MD
The entire experience was exceptional from the initial estimate by Geoff to the completion of work by Sasha and his coworker. I felt like everyone cared about me and my project.
Barbara S., Glen Burnie, MD
Geoffrey provided a great initial visit with easy to understand explanation of recommendations, and follow-up on questions. Both the crew administering tree treatments, and the crew pruning and cabling of he Silver Maple were the best. Thanks.
Craig B., Gambrills, MD
Geoffrey provided a great initial visit with easy to understand explanation of recommendations, and follow-up on questions. Both the crew administering tree treatments, and the crew pruning and cabling of the Silver Maple were the best. Thanks.
Craig B., Gambrills, MD
Great group. I am extremely happy with the company.
Nancy H., Gambrills, MD
Geoffrey and other crew members are very knowledgeable and helpful. We appreciate their help and professionalism.
Elizabeth C., Gambrills, MD
As they have done in the past Bartlett has exceeded my expectations again. The work was completed on time and looks great. Thanks.
Stephen B., Odenton, MD
Excellent experience with estimator. Very knowledgeable and honest. Answered all our questions and made recommendations. Tree cabling and pruning team was awesome. Our trees look fantastic and all branches were cleaned up and shredded. Watching the gentleman climb the tree to prune and cable was amazing. Highly recommend this company.
Darlene D., Gambrills, MD
Friendly staff and crew. I have a Rottweiler who was outside with me and they were accepting of him. They got rid of all the tree branches and was willing to leave the debris that was in their truck. Excellent service and knowledgeable crew. Helpful in explaining things and answering my questions.
Paul M., Glen Burnie, MD
Geoffrey was knowledgeable and forthcoming with welcome suggestions. Thanks to his advice, my Azaleas bloomed better than ever before.
Andrea R., Hanover, MD
Everyone was very professional and helpful.
Barbara T., Gambrills, MD
Geoffrey came out and gave an estimate for cutting a dying double large Poplar tree in the back yard. Also, an estimate for maintenance of lighting protection on two tall trees. He came out several times while the two days of work was being done to ensure it was being done properly, He worked with arborist cutting the tree to ensure that our landscape was not damaged. The crew spent more time than was expected to keep damage at a minimum. We were pleased with the work that was done.
Bartlett Tree Experts do a wonderful job and are truly tree experts. They are friendly and careful with your landscape.
Robert M., Gambrills, MD
The crew met all my requests and were very professional.
Marilyn G., Severn, MD
The Bartlett staff are great. They listen and are so helpful. They do a great job and I would recommend them to anyone.
Barbara D., Glen Burnie, MD
Geoffrey Thill was fabulous. On our first consultation, Geoffrey was very thorough with his review of the trees on our property. He took his time to explain all his recommendations without acting rushed or making me feel rushed. Geoffrey was very willing to share his knowledge and help me understand all the care our trees need. The crew members who arrived to do the work were exceptional. They worked very hard and at a very good pace. Smiles, courtesy, and respect for our property were in full display the entire time. It is very apparent that Geoffrey and the crew truly enjoy and care about their work. We would highly recommend Geoffrey and Bartlett Tree Service and plan to continue our relationship with them.
Mittie T., Severn, MD
They were fabulous and went above and beyond to ensure I was pleased. Great experience.
Carol C., Odenton, MD
Thank you much. The yard looks great and I appreciate that you could do the work without anyone being home at the time.
Clare C., Odenton, MD
I am very satisfied with all the Bartlett staff I interacted with. I was very impressed with the work crew that removed a very large tree with complete precision even when working around obstacles and other trees without any damage to them. Geoff was my Arborist and he was extremely knowledgeable and suggested additional treatments and fertilization for our remaining trees. The work was performed flawlessly and finished ahead of schedule. I wont hesitate to call again.
Keith C., Glen Burnie, MD
Excellent service, very friendly, very big on safety, I will use again if needed.
Larry P., Glen Burnie, MD
Very professional and answered all appropriate questions I had. Thank you for the service.
George L., Gambrills, MD
Very friendly and knowledgeable.
Dennis S., Linthicum, MD
This is the third time we have used the service great as the last two times. Thank you.
Vicent J., Severn, MD
Top notch service across the board. They did an excellent job from start to finish.
Matthew A., Linthicum Heights, MD
I can only say that your staff is outstanding, courteous, and efficient. They are just wonderful. I am always a bit apprehensive doing business for the first time with a company even if recommended by a friend. I certainly should not have bothered with being concerned about Bartlett. They were outstanding. I will be only too happy to recommend them to anyone needing tree service.
Mary M., Glen Burnie, MD
Geoff was polite, friendly, helpful, unrushed, knowledgeable, and thorough. He was responsive electronically and by phone. It was a pleasure to interact with him. He is a great ambassador for your company.
Mary T., Hanover, MD
Geoffrey as well as the whole crew were courteous, extremely knowledgeable, and informative regarding pruning, and health of our trees. They provided additional information and answered all of my questions.
Randy R., Linthicum, MD
Extremely professional. Always willing to take the time and answer questions. Kudos to your company and crew members.
Frank B., Glen Burnie, MD
Geoffrey was awesome and I am very pleased. The crew that showed up to grind the stump of the tree I had removed was very professional. Being that I work for the US Department of Agriculture and am very familiar with taking trees down and all the safety involved I was glad to see that the crew that showed up was very cognizant of safety Looking forward to giving Bartlett my continued business.
Keith M., Odenton, MD
Geoffrey Thill and his crew members were very professional and courteous to me. The job was done right and I was pleased. Geoffrey Thill went out of his way to make sure the job was completed correctly and to my satisfaction. Many thanks.
Suziann D., Severn, MD
Having an arborist like Geoffrey with whom to work gives me confidence and trust when making decisions that affect the appearance and value of my home. I have also found the price difference between Bartlett and other landscapers to be less than expected. Using Bartlett gives me peace of mind that if problems ever were to occur, I would have a well established and reputable business with whom to deal.
Gloria B., Linthicum, MD
I appreciate all your work. And your honesty when you traced brown leaves to spray being too hot.
Mary H., Annapolis, MD
Geoff has always been courteous, patient, and informative. He has been my go-to guy for the past couple of years.
Charlotte T., Linthicum, MD
The Arborist Mr. Thill was very knowledgeable and answered all my questions. The administrative assistants were very customer service oriented and very friendly. The crew that did my tree work was very efficient and got the job done quickly and neatly.
Maryann H., Severn, MD
In addition to providing a thorough inspection of my tree, Geoffrey took time to listen to my concerns. He answered all my questions plus provided expert advise. I spoke with John Davis on the phone but was not at home when he stopped by to apply the treatment. The crew that showed up to trim the tree was very courteous and quick to do a great job. Thank you Geoffrey, John, and crewmembers!
Maddie P., Glen Burnie, MD
Staff were very responsive, helpful, and knowledgeable. They were able on short notice to accommodate and fit us in to the schedule for treatment. This level of service is very much appreciated. Will definitely be in touch for annual yard and tree inspection. Service is excellent. Thank you.
Larry B., Severn, MD
From the initial consultation to completion of the work, all was handled with professionalism. The work crew really seemed to pay attention to safety, were extremely organized, worked hard, and knew what they were doing. This is the second time Bartlett has done major work on trees on my property and I was very satisfied both times.
Jeff W., Severn, MD
Extremely professional.
Frank B., Glen Burnie, MD
Geoff Thill has been flexible with scheduling. He talked through my situation with me, and got me the best service to match my needs. He did not just try to upsell. Everyone was courteous, and did their jobs well.
Joseph P., Severn, MD
Geoff Thill is responsive and knowledgeable. He communicates well. John, who did the applications, went out of his way to come back to complete a treatment when a neighbor allowed access to part of of the tree.
Michael S., Annapolis, MD
Geoffrey and Kyle met all my expectations and were a pleasure to work with. Denise was also responsive and pleasant.
Dawn M., Linthicum Heights, MD
The crew has been great in providing the tree and landscaping treatments. They are very professional and attentive to the task at hand and very nice to talk with. I am looking to many years of continued excellent service from Bartlett.
Dan W., Linthicum Heights, MD
All were knowledgeable, personable, and were able to get the job done expertly. Great Job.
Andre W., Severn, MD
Geoff is really trying to help us with our issues as is Ken.
Robert and Carolyn C., Annapolis, MD
Job well done. Personnel were extremely professional.
Frank B., Glen Burnie, MD
Mr. Thill was extremely knowledgeable concerning the work I needed to preserve my existing trees and shrubs. His pleasant manner and professionalism made my decision to have Bartlett do the job easy for me. The two gentlemen who actually came out to my residence to perform the trimming of the trees were very pleasant. They did amazing work and I was extremely happy with the job they did. I would like to thank Bartlett for all they did and treating me with respect and friendliness. To anyone who is looking for a knowledgeable, professional, and friendly company, you could not do any better then Bartlett. I highly recommend them.
B. D., Severn, MD
Geoff who serviced our property was very thorough and polite.
Elizabeth S., Severn, MD
The crew members are friendly, knowledgeable, and get right to the job. My grounds are left in good order. This is the second year I have employed Bartlett to take care of my property. I would recommend them to everyone. They know the problems and recommend a remedy for them. There is no charge for the consultation, please give them a try.
Carol W., Ferndale, MD
We needed emergency service after a wind gust snapped a tall Virginia pine in our backyard. Called Denise at Bartlett, who was very personable and quick in contacting their arborist, Geoff. He was at the front door in thirty minutes. He evaluated the situation, gave a quote, and the crew was there fifteen minutes later. The team was efficient and well managed, and even blew pine needles off our trampoline during cleanup. They offered a free consultation the next day to evaluate the rest of our trees. I would definitely recommend this company to our friends and neighbors. The best tree service that we have ever had.
Shawn C., Severn, MD
Extremely professional.
Frank B., Glen Burnie, MD
Geoff has always been very knowledgeable and understanding in regard to my concerns. I have two large trees at the entrance to my home which I have been concerned about over the years and he works diligently to keep them healthy and in good shape which adds to the appearance of the landscape of my home. I am more than satisfied with the service I receive from Bartlett.
Charlotte T., Linthicum, MD
I always feel reassured about the health of my trees after Geoffrey Thill does a site visit of my property. He educates me and makes practical recommendations for ways to maintain or improve my trees and shrubs. The crews that do the work are always punctual, professional, and courteous.
Angela W., Glen Burnie, MD
The men were really great. They were very courteous and thoughtful, making sure any questions I had were addressed. Your company should be proud of these men. Please let them know that they were very much appreciated.
Mary B., Glen Burnie, MD
Geoffrey took the time to explain and answer all my questions.
Frank B., Glen Burnie, MD
I just wanted to express my appreciation for the excellent work done by Geoff. He very carefully and professionally pruned and trimmed the appropriate trees and bushes. He did this thoroughly despite the extreme heat. Our front and back yards have never looked better.
Chip S., Crofton, MD
Everyone we dealt with was knowledgeable, professional, informative, and nice. The work began right on schedule.
Susan A., Annapolis, MD
Amazingly adept at removing large trees from the roof of a house. Also good at trimming tall trees, keeping them from the house and gutters. The crew leader knows the trees by their botanical names and the whole crew cares about both the environment and preserving trees when they can.
Jan M., Laurel, MD
All interactions have been professional.
James J., Annapolis, MD
Geoffrey responds almost immediately to all calls and answers my questions and requests with great detail. It is a pleasure to work with him on the several problems I have with some of my trees.
Patty H., Annapolis, MD
Geoffrey was courteous and knowledgeable.
Janis J., Annapolis, MD
The Crew was professional and came together as a team. I was very impressed.
Jan M., Laurel, MD
I am writing to express our gratitude for the outstanding service provided to us by Bartlett on Sunday. Specifically and gratefully, we salute Geoffrey Thill and his team. In addition to removing a large, awkwardly-situated fallen tree from our roof and property, they securely covered the holes in our roof with a tarp and raked the lawn to remove debris. The team arrived on time and worked steadily for six hours. Their work ethic and attention to safety for both persons and property was impressive. So was the collaborative problem solving involved in hoisting the heavy trunk of the tree and its massive branches into position to be cut up and removed. At one point, with masterly precision, they guided the massive trunk into alignment with the gate in our fence. They inspired us, as I am sure they inspire other customers, with their professionalism, skill, and efficiency.
Theodore A., Edgewater, MD