Unsurpassed Quality in Residential Landscaping, Patio & Irrigation Services for Over 40 Years

It’s more than just a yard. At Denison landscaping you don’t have to tell us that. Our landscaping experts have spent over 42 years—in Maryland, Virginia, Delaware and Washington D.C. transforming yards into customized outdoor living spaces.

Our residential landscaping, irrigation, and hardscaping services are tailored to fit your needs and geared to exceed your expectations. And all at costs that suit your budget.

Despite being one of the Mid-Atlantic region’s largest landscape contractors, we have been family-owned and operated since 1973. And it is those core family values that we tap into when we create our residential outdoor dreamscapes.

John Denison- Owner of Denison Landscaping

John Denison

I’m proud to put the Denison family name on the quality work that we do. Commitment, Quality, and Service are the roots of our business.
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See What People Are Saying About Denison

  • I love what you have done for me every year…it’s like fairy dust sprinkled on my yard every spring.  Thanks for making my spring, summer and fall so much brighter and just in time for Mother’s day for which this project was made for.

    BTW the guys did an amazing clean up job….what a transformation.  Wow…..worth waiting for and every penny!!!!

    Dr. Lisa Lewis
  • All I can say is, you and your team are to be commended for planning and putting in some incredible new flower beds!!  They are “AMAZINGLY BEAUTIFUL”!!!!!!

    Carol B.
  • Thank you for the work that you’ve done over the past months.  For the past 8 years I was almost ashamed of my backyard.  It looks great now.  I can’t wait to have guests over for a cookout.

    Claude J.