Robert C. O’Brien, President of O’Brien Landscapes Unlimited and H20000 Systems has been a native of Morrisville/Yardley all his life. Bob attended Morrisville High School, and graduated from Delaware Valley College, Doylestown, in 1968 with a Bachelor of Science Degree in Ornamental Horticulture.

After College, Bob served in the U.S. Army and is a veteran of the Vietnam War. Bob was employed by several large landscape firms in the area. In 1984 he decided to “go out on his own”, and a new business was born and has been growing ever since.

O’Brien Landscapes Unlimited and H20000 Systems are very fortunate to have some of the best employees in the area. They are all very courteous, polite and reliable and have a vast amount of experience in all facets of landscaping, including, but not limited to, Irrigation Systems. E.P. Henry Concrete Paver Patio and Wall Systems, Natural Stone Patios & Walls, Water Gardens and Landscape Lighting are their specialties.
We are certified designers and installers of concrete pavers and walls by the Interlocking Concrete Paver Institute (I.C.P.I.), and The National Irrigation Association as designers and installers of irrigation systems.

Our employees spend their winters attending seminars learning the newest techniques in installation of water gardens, landscape lighting, and any other courses that would help them be of service to our clients.

The Pennsylvania Horticultural Society will also have our employees helping set up and manning a booth at the Philadelphia Flower Show. This is an event that we all look forward to with enthusiasm.

Customers are our Number One Priority! This has resulted in add-on services and lots of referrals.