Lawn care, garden maintenance, irrigation & hardscaping for Smithtown homeowners. Reliable, fully insured, and right around the corner — with free on-site estimates.
Green Horizon keeps Smithtown yards looking sharp, from the neighborhoods near Main Street to the quiet residential blocks across the 11787 area. We treat every property like it's our own.
Out in the North Shore, Smithtown homes deal with mature trees, shadier lots, and heavier seasonal leaf drop — so the right care really matters. We show up on schedule, do clean, careful work, and leave your yard better than we found it.
Whether it's weekly mowing, a fresh mulch job, a new sprinkler system, or a full backyard build, you've got one local, insured crew handling all of it.
Book Your Free EstimateEverything you need to keep your Smithtown property sharp — tap any service to learn more.
Mowing, edging, fertilization & treatments to keep your Smithtown lawn thick and green.
Learn more →Bed care, trimming, and the big spring & fall cleanups Smithtown properties need.
Learn more →Fresh, clean mulch beds that boost curb appeal and keep weeds down.
Learn more →Custom sprinkler design & install to keep larger Smithtown lawns watered right.
Learn more →Turn bare or patchy Smithtown lawns into full, lush grass with sod or seed.
Learn more →Patios, walkways & stone work to make the most of your Smithtown backyard.
Learn more →We're local to the area, so we get to your Smithtown property fast.
Fully covered on every job, so your property is always protected.
On schedule, every time — no no-shows, no chasing us down.
We treat your yard like our own and leave it spotless when we're done.
"We switched to Green Horizon after our last landscaper kept no-showing. These guys actually answer the phone, show up on schedule, and our lawn has never looked this consistent."
Yes — we service all of Smithtown (11787) and the surrounding neighborhoods. Not sure if you're in our zone? Just call and we'll confirm in seconds.
We're local to the area, so we move quickly. Reach out and we'll let you know the soonest we can come by for your free estimate.
Absolutely. A lot of Smithtown properties have mature trees and heavy leaf drop — full fall cleanups and haul-away are one of our most-requested services in the area.
Yes, Green Horizon is fully licensed and insured, so you and your property are covered on every job, every visit.
Get a free, no-obligation estimate for your project. We respond within 24 hours.
No pressure. No commitment.