AP Mazzilli Landscaping has been designing, building, and maintaining Mountainside properties for more than fifteen years — and Mountainside is about as close to home as it gets. Our base in neighboring Westfield puts our crews minutes from every street in the borough, from the homes along Mountain Avenue to the wooded properties backing up to the Watchung Reservation. Landscaping in Mountainside is a different discipline than landscaping in the flat towns south of Route 22: here you're working with real slopes, rocky trap-rock soil, deep oak shade, and a deer herd that treats unprotected plantings as a salad bar.
Landscaping Services in Mountainside, NJ
Those conditions punish generic landscaping. They reward contractors who have spent years learning what actually survives and holds on a Watchung hillside. This page covers the services we provide in Mountainside, what makes the borough's terrain unique, the problems we solve most often here, and answers to the questions Mountainside homeowners ask us. When you're ready, request a free estimate and we'll walk your property with you.
Our landscaping services in Mountainside
We handle the full lifecycle of a residential landscape — design, construction, planting, and the season-after-season maintenance that keeps it all performing. Here's what that looks like in Mountainside:
Landscape design & installation
Full planting plans and landscape makeovers built for Mountainside's conditions: deer-resistant plant palettes, shade-tolerant layers under mature oak canopy, and woodland-edge designs for properties that border the Reservation. Mountainside's mid-century ranches and split-levels — common along New Providence Road, Wyoming Drive, and the streets climbing toward Summit Road — look their best with updated foundation plantings that replace overgrown 1960s yews with layered, modern, low-maintenance beds.
Retaining walls, terracing & hardscaping
This is the service Mountainside properties need more than almost any other town we serve. Sloped front yards, backyards that drop away from the house, driveways cut into a grade — we build natural stone and segmental retaining walls, terraced planting beds, steps, and walkways that turn unusable slopes into structured, beautiful outdoor space. Patios, outdoor kitchens, and fire pit areas complete the picture. Every wall we build is engineered for the site: proper footing, drainage stone, and geogrid where the grade demands it.
Lawn care & maintenance
Mountainside lawns tend to be larger than neighboring towns' and harder to grow — thin topsoil over basalt rock, heavy shade, and slopes that shed water before it soaks in. Our maintenance programs are built around that reality: high mowing, core aeration to fight the compaction that shallow rocky soil creates, overseeding with shade-tolerant blends, and fertilization timed to Union County's actual growing season rather than a generic calendar.
Seasonal cleanups & mulching
The oak and hickory canopy that makes Mountainside beautiful also buries it every fall. Our fall cleanups are sized for wooded lots — repeated leaf removal, gutter-adjacent bed clearing, and cutting back perennials before snow. Spring cleanups reset the property: bed edging, pre-emergent, and fresh mulch installed at the right depth (two to three inches — more than that suffocates roots, and we see it done wrong constantly).
Drainage & erosion control
Water moves fast on a hillside. We correct washed-out beds, rutted lawns, flooded walkways, and wet foundations with regrading, French drains, dry creek beds, channel drains across sloped driveways, and swales that move runoff where it belongs. On erosion-prone slopes we combine drainage work with deep-rooted groundcovers and terracing so the fix holds through the next decade of storms, not just the next season.
Understanding Mountainside's landscape
Mountainside sits on the southern slopes of the Watchung Mountains, and everything about landscaping here follows from that geology. The ridge is basalt — trap rock — covered by a thin, often rocky layer of soil. Dig a planting hole almost anywhere in the borough and you'll hit stone; that's why plantings installed by crews who don't amend and pocket the soil properly fail within a couple of seasons.
The 2,000-acre Watchung Reservation forms the borough's northern edge, and it shapes Mountainside yards in two ways. First, it's home to one of the densest deer populations in Union County — any planting plan that ignores deer browsing is a donation, not a landscape. Second, properties near the Reservation live under mature forest canopy, which means deep shade, root competition, and heavy autumn leaf drop.
Add the slope itself — most lots tilt south toward Route 22 and Echo Brook — and you get the three-part challenge that defines the town: hold the grade, manage the water, and plant what survives shade and deer. It's demanding terrain, but it's also why Mountainside has some of the most dramatic landscapes in the county. A terraced hillside garden with natural stone walls simply isn't possible on a flat lot in Garwood or Cranford. Here, it's the default canvas.
Common landscape challenges Mountainside homeowners face
Five problems come up in Mountainside estimates more than anywhere else we work:
1. Deer eating everything. The Reservation herd browses through neighborhoods nightly, and the browse line on arborvitae hedges tells you exactly where they've been. No plant is truly deer-proof, but a smart palette — boxwood, andromeda, spirea, catmint, ornamental grasses, hellebores — combined with strategic placement of the vulnerable plants close to the house cuts damage dramatically. We design for deer from the first sketch, not as an afterthought.
2. Slopes that wash out. Mulch in the street after every storm, beds migrating downhill, ruts cutting through lawns. Erosion is a system problem: it takes terracing or walls to break up the grade, drainage to redirect the water, and deep-rooted plantings to knit the soil. Solving one piece without the others is why so many previous fixes our clients describe didn't hold.
3. Thin, rocky soil over trap rock. The Watchung ridge is stone with a soil blanket, and in some yards the blanket is only a few inches thick. Planting here means excavating generous pockets, importing quality soil, and choosing species that tolerate shallow root zones. It also changes irrigation math — thin soil dries out fast in July.
4. Deep shade lawns that won't fill in. Under mature oak canopy, standard turf blends give up. We overseed with fine fescue shade mixes, mow high, aerate annually — and when a spot genuinely gets under two hours of sun, we'll tell you honestly that a shade garden or groundcover bed will look better than struggling grass ever will.
5. Sloped driveways and walkways that ice over. Runoff freezing across pavement is a safety issue, not just a nuisance. Channel drains, regrading the shoulder, and correcting downspout discharge usually solve it — and our winter snow and ice service keeps Mountainside driveways passable per-storm or by seasonal contract.
Recent Mountainside projects
The photos below show recent work on Mountainside properties and similar Watchung-slope terrain nearby — retaining walls and terracing, deer-resistant planting installs, drainage corrections, and full-property makeovers. Every project starts with a free on-site consultation so we can see the grade, the shade, and the soil before we quote anything.
Frequently asked questions
Do you provide free estimates in Mountainside?
Yes. Every estimate is free with no obligation. We walk the property with you, talk through what you want, and follow up with a written quote — usually within 48 hours. Request one through our estimate form or call the office. Mountainside is minutes from our Westfield base, so scheduling a visit is fast.
Can you handle steep or sloped yards?
Slopes are our specialty in Mountainside. We design and build retaining walls, terraced beds, and steps that make graded properties usable, and we engineer every wall for the specific site — footing, drainage stone, and reinforcement where the height requires it. If a slope can be solved with plantings and drainage instead of a wall, we'll tell you; it's usually the less expensive path.
What plants actually survive the deer in Mountainside?
Boxwood, andromeda, ornamental grasses, catmint, salvia, hellebores, ferns, and spirea are the backbone of our Mountainside palettes. Just as important is placement — tulips and hostas belong close to the house, not at the woodline. We'll be straight with you: nothing is deer-proof when the herd is hungry enough, but a deer-smart design keeps damage cosmetic instead of catastrophic.
How quickly can you start on my Mountainside project?
Lawn maintenance and cleanups typically start within a week. Landscape installs, walls, and hardscape projects run 2 to 6 weeks out during peak season (April through October), shorter in the off-season. We give you a real timeline with your quote — not a vague promise.
Do you offer year-round lawn care in Mountainside?
Yes. Our maintenance program runs from spring cleanup in March through fall cleanup and winter prep in November and December, and we handle snow and ice management for Mountainside driveways and walkways all winter — which matters more here than in the flat towns, because sloped pavement and ice are a dangerous combination.
Ready to transform your Mountainside property?
Whether it's a retaining wall that finally makes the backyard usable, a deer-resistant planting plan that stays beautiful past June, or a maintenance program sized for a wooded Watchung lot, we'd love to take a look. Fill out our free estimate form and we'll be in touch within one business day to schedule a visit — or call the office if you'd rather talk it through first. Honest quotes, realistic timelines, and crews that know exactly what a Mountainside hillside demands.