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About The Knotted Grotto

The Knotted Grotto was a temporary art installation commissioned by Project HOME that celebrated the World Meeting of Families and the September 2015 visit of Pope Francis to Philadelphia.



with Steam Chamber, Starlite Productions, Robert O'Sullivan Landscaping And Those Who Struggle. For more information and to learn more > click here



About Us

A Second Generation of Service Excellence!

The full service commercial / residential landscaping contractors trusted by our Main Line, Delaware, Montgomery and Chester County neighbors since 1984.

Recommended Landscape Gardener



I'm Robert O'Sullivan, founder of Robert O'Sullivan Landscaping Company and owner of


A brief history:


At the end of the Korean War my father Michael, or Mr. Mike as he was known, started O'Sullivan Landscaping Contractors. Through hard work and dedication he built a successful business, one residential client at a time. My fathers work ethic and honesty was beyond reproach and his business was built by word of mouth. Nobody worked harder than my father and we miss his larger than life presence everyday... Actually, one person worked harder, my amazing Mother, she raised ten children!


property maintenance
property maintenance
property maintenance

Commercial Property Maintenance.

Creating great first impressions!


Robert O'Sullivan Landscaping Contractors: The Landscape Company trusted by prestigious Delaware Valley Companies:

Delaware County Landscape Contractor
Montgomery County Landscape Contractor

Some of my earliest childhood memories are working with my Father. I was running machines as soon as I could walk and by the time I was 16 I had no option but to be a seasoned landscape professional. My Youth was one of hard work and rebellion.


In 1984 I graduated from West Chester University with a Business degree and an urge to strike out on my own. I wanted to build a landscaping business on my own terms. They were simple terms and these same guiding principles are how I run my business today: A quality product for a fair price.


33 Years later, original customers remain loyal, respected Delaware Valley businesses trust my service and I continue to grow my business, like my father before, one client at a time.


I appreciate you taking the time to visit our corner of the Internet and remember, I'm here to help make your landscape project a reality. Please click here or call me at 610-789-7675 for a fair and competitive landscaping quote.


Kind Regards,


 Robert O'Sullivan


Knotted Grotto



It was an honor and a highlight of my professional career to be chosen to work as part of Meg Saligman's amazing team on the "Knotted Grotto" project which celebrated  the September 2015 visit of Pope Francis to Philadelphia


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Lawn Maintenance:


Lawn Care, Weekly Cutting, Weeding, Scheduled Feedings, Fertilizers, Reseeding, Aerating, Turf Install, Hydro-Seeding. Annual Maintenance Contracts Available.



Serving Delaware, Chester, Montgomery Counties and the Main Line.


Lots Cleared:


Grading, Trees / Brush Cleared, Wood Chipping and Stump Grinding Services


Custom Walkways, Driveways, Retaining Walls and Ponds Installed:


Interlocking Pavers, Flagstones, Cobblestones and more. We work with and are certified to install most commonly available brands.

Property Maintenance Services:


Residential / Commercial / Public / Industrial - Annual Contacts.

Lawn Care and Maintenance
walkways and patios
Snow Plow and Ice Removal Services
Stump grinding and lot clearing.

Snow Plowing, Salting and Ice Removal Services:


Residential / Commercial / Public / Industrial - Contracts Available.

Commercial Property Maintenance


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Robert O' Sullivan Landscaping Contractors


Highland Park

Delaware County

Pennsylvania 19082

Top Rated Landscape Contractor

Photography by Ciara O'Sullivan

Robert O'Sullivan Landscaping Contractors - Delaware County Landscape Contractor Service Area A To Z:


BoothwynBortondale, Broomall, Cheyney, Concord, Crum Lynne, Drexel Hill, Elwyn, Folsom, Garden City, Garnet Valley, Garrett Hill, Glen Mills, Gradyville, Haverford, Haverjtown, Holmes, Lenni, Lima. Linwood, Moylan, Radnor, Riddlewood, Rosemont, Rose Tree, Secant, St. Davids, Strafford, Villanova, Wallingford, Wawa, Wayne, Woodlyn.


Robert O'Sullivan Landscaping Contractors - Montgomery County Landscape Contractor Service Area A To Z:


Abington Township, Ambler Borough, Bridgeport Borough, Bryn Athyn Borough, Cheltenham Township, Collegeville Borough, Conshohocken Borough, Douglass Township, East Greenville Borough, East Norton Township, Franconia Township, Green Lane Borough, Hatbox Borough, Hatfield Borough, Hatfield Township, Horsham Township, Jenkintown Borough, Lansdale Borough, Limerick Township, Lower Frederick Township, Lower, Gwynedd Township, Lower Merion Township, Lower Moreland Township, Lower Pottsgrove Township, Lower Providence Township, Lower Salford Township, Marlborough Township, Montgomery Township, Narberth Borough, New Hanover Township, Morristown Borough, North Wales Borough, Pennsburg Borough, Perkiomen Township, Plymouth Township, Pottstown Borough, Red Hill Borough, Rockledge Borough, Royersford Borough, Salford Township, Schwenksville Borough, Skipjack Township, Souderton Borough, Springfield Township, Telford Borough, Towamencin Township,Trappe Borough, Upper Dublin Township, Upper Frederick Township, Upper Gwynedd Township, Upper Hanover Township, Upper Merion Township, Upper Moreland Township, Upper Pottsgrove Township, Upper Providence Township, Upper Salford Township, West, Conshohocken Borough, West Norton Township, West Pottsgrove Township, Whitmarsh Township, Whitman Township,Worcester Township.


Robert O'Sullivan Landscaping Contractors - Chester County Landscape Contractor Service Area A To Z:


Atglen, East Nottingham, Londonderry, Schuylkill, West Chester, Borough,Avondale, East Pikeland, Lower Oxford, South Coatesville, West FallowfieldBirmingham, East Vincent, Malvern, South Coventry, West Goshen, CalnEast Whiteland, ModenaSpring City, West Grove, Charlestown, Easton, New Garden, Thornbury, West Marlborough, Coatesville, Elk, New London, Tredyffrin, West Nantmeal, Downingtown, Elverson, Newlin, Upper Oxford, West Nottingham.



(610) 789-7675

Copyright© 2019 Robert O'Sullivan Landscaping Contractors /

Serving Our Neighbors In Delaware Co. , Montgomery Co., Chester Co. & The Mainline in Pennsylvania Since 1984

(610) 789-7675

O'Sullivan landscape Contractor 610-789-7675

(610) 789-7675