Exceeding Expectations…


No one is going to work harder to make you happy. Period. At Green Monster Landscapes, we take an incredible level of pride in our work and settle for no less than perfection from ourselves.

We believe in traditional business practices such as integrity, honesty, and superior pride in workmanship. We respect your time and property and deliver on our promises. These are the old school characteristics that are hard to come by today – that’s what makes us different. Give us a call and see for yourself!

Who Are We?


We are a dedicated team of landscape professionals, with personnel skilled in the arenas of landscape design, stone masonry, hardscape installation, planting installation, fine gardening, irrigation, low voltage landscape lighting, site construction and grading.  We are fully equipped to perform all of our services on a turnkey basis. This allows us to control the quality of our work – ensuring you receive no less than perfection.

We are a locally owned and operated company, with base operations located in Dover, New Hampshire.  Mark Arsenault began Green Monster Landscapes, LLC in 2003 by installing walkways and patios with little more than a shovel and wheelbarrow. The business grew quickly, necessitating the addition of employees and equipment.

Today, Green Monster Landscapes, LLC is a multiple crew firm offering full landscape services to include hardscape, softscape, site work, irrigation, lighting, fine gardening, maintenance, and more. Our service area ranges from the NH Lakes Region to the seacoast and most of central and southern NH. Our crew consists of University trained horticultural professionals as well as those who have cut their teeth the old fashioned way, on the job.  All employees are encouraged and required to participate in ongoing education.

Why Choose Us?

  • We offer a one year warranty on all plant material.
  • We offer a five year warranty on hardscape installations.
  • Free estimates on all services. Estimates are tailored to your particular needs at no additional cost.
  • We offer a variety of payment options. With financing plans, monthly billing, maintenance packages, we can help you stay on budget.
  • Interesting and creative landscape designs.
  • Extensive knowledge in hardscape, horticulture, irrigation and all other areas of our service palette.
  • Fully insured with Liability and Worker’s Compensation insurance.  Don’t risk your largest investment with an uninsured landscape provider!
  • Continuing education and employee training: We’re always on top of industry trends and changes. In addition to snowplowing, our off season is spent at trade shows, seminars, and training classes.
  • We are nearly self-sufficient and resort to subcontracted services only when absolutely necessary.  When subcontractors are required, we have a tight network of contractors that we know and trust.
  • We use top quality commercial equipment: All the equipment in our fleet is reasonably new, and on a strict maintenance schedule. Less down time on our end equates to dependability for you.