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    Average homeowner rating
  • Verified reviews icon202
    Verified landscaping services reviews

Top-Rated Landscapers in Cos Cob - Updated Nov 2026

Avatar for Ron's Masonry
Ron's Masonry
5.0(
30
)
Lawn & Yard Waste Clean UpLandscape - Soil, Sand, Mulch and Rock DeliveryLawn Care - Maintain and Mow a Lawn+7 more

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1995

Emergency services offered

Small jobs welcome

"In addition to his masonry expertise, Ronald did an excellent job preparing our large spa pool for summer use and repairing the wood surround. I have also hired him to repair some Belgian Block curbing and secure paved stairs."
Walkway
Steps
Footing
Walk
Walk

+36

Response time1 day
Response rate86%
27 neighbors recently requested a quote
WHITE GARDEN DESIGNS
5.0(
5
)
Landscape - Install Landscaping for Yard or GardenDesigner - LandscapeDrywell - Construct or Rebuild+10 more

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2002

Free estimates

Offers commercial services

"White Garden Designs is the Best!! I have used him for at least 10 years now and nobody cares more or is more detail oriented than Charlie. I have recommended him and his company to dozens of friends and everyone was as pleased as I am. They always show up on time and if there is ever a problem (which I haven't had) they will always make it right. He takes pride in his work and it shows. He also is a Koi pond specialist, designing and maintenance. This man does it all. He is the go to guy for all your landscaping and pond needs."
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Greenscape Lawn Care
Greenscape Lawn Care
5.0(
10
)
Architect - LandscapeDesigner - LandscapeDrywell - Construct or Rebuild+8 more

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2023

Free estimates

Customers say: True professional

"Jorge and crew from Greenscape Lawn Care provided excellent customer service including prompt & friendly communication, fair and upfront pricing, & efficient completion of the project. Jorge listened to my vision and was dedicated to making my vision to come to life. He provided quick digital mockups of my design using pictures of my space. It was the best way to determine the details of my design preferences. The team provided helpful feedback of my design through the whole process. Their quality of work is gold standard, they do not cut corners on any detail. Their work ethic is excellent and their dedication to a projects success is apparent at every step of the process. We are so happy with our new space and receive compliments on it daily from our neighbors and friends."
Landscaping Project
Landscaping Project
Landscaping Project
Landscaping Project
Landscaping Project

+26

Response time1 day
Recommended by100%of homeowners
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Landscaping FAQs, answered by experts

A window flower box should be deep enough that there’s room for a wide selection of plants and the required amount of soil and gravel. Standard flower boxes are 8 inches deep and 8 inches from front to back. Larger is better to increase the variety of plants in the box, but you could run into stability issues as it increases in weight.

Yes, weeds can still grow in decomposed granite. If properly compacted, it can act as a good weed suppressant, meaning you’ll only pull weeds occasionally. But no ground cover is completely weed-proof. To further prevent weeds, you can try spraying your decomposed granite with distilled white vinegar.

Other projects that you can do at the same time as your trellis include painting the deck , installing a pergola, or adding mulch to your garden beds.

Yes, many providers offer organic or eco-friendly treatments. Confirm availability with your contractor.

While you can leave roots in the ground, if you don’t want the shrub to regrow again over time, it’s best not to leave any roots behind. Ensure you remove as much of the shrub as possible, including the root ball and any main roots you can see, to prevent new growth. Some gardeners opt for using a chemical treatment to prevent the stump from growing back, but this can kill beneficial microorganisms living in your soil.

The Cos Cob, CT homeowners’ guide to landscaping services

From average costs to expert advice, get all the answers you need to get your job done.