If you’re in Oyster Bay, you’re sitting right next to some of the best “real-life landscaping classrooms” on Long Island. Arboretums and historic garden properties aren’t just pretty places to walk—they’re living examples of how to combine plants, grading, drainage, paths, views, shade, privacy, and seasonal color in a way that still looks good years later.

Below are the top arboretums and garden properties in Oyster Bay and nearby North Shore towns, along with specific landscaping takeaways you can apply at home (whether you’re building a new outdoor space or renovating an old one).

1) Planting Fields Arboretum State Historic Park (Oyster Bay / Upper Brookville)

Why it’s worth your time: Planting Fields is the closest thing we have to a “masterclass estate landscape” right in the Oyster Bay area. It’s a major historic property with over 400 acres of lawns, gardens, woodlands, and walking paths—so you get big-scale design ideas, but also small garden moments you can copy. 

What to notice from a landscaping standpoint

A. Layering and transitions (the secret to “expensive-looking” landscapes)
Planting Fields shows how to transition from one “outdoor room” to another without it feeling choppy. You’ll see the classic sequence:

• broad lawn / open space
• framed views with trees and shrubs
• garden rooms with structure and focal points
• woodland edges that soften everything

How to apply at home:
Even if your property is 60’ wide, you can still build transitions:

• Start with a clean open “negative space” (often lawn or a simple groundcover field)
• Frame the edges with mid-height shrubs
• Add taller trees behind for depth
  This is the difference between “a bunch of plants” and a landscape that feels designed.

B. The value of evergreen structure (especially on the North Shore)
Long Island landscapes look incredible May–October, but the real test is November–March. Planting Fields succeeds because there’s always structure—evergreens, trunks, hedges, and repeating forms—holding the scene together.

How to apply at home:
Choose a backbone of:

• evergreen screening (for privacy + winter color)
• a few strong specimen trees (shape and shadow)
• repeated shrub masses (not singles scattered everywhere)

C. Greenhouses and collections = a lesson in microclimates
Planting Fields is known for major greenhouse collections, including a Camellia greenhouse and other plant collections in the main greenhouse. 
That’s a reminder: protected areas on your property (south-facing walls, sheltered corners, courtyards) can support plants that struggle elsewhere.

How to apply at home:
Look for:

• sunny, wind-protected pockets near the house
• courtyard-like areas near fences and hedges
• spots where snow melts first
  Those are your “microclimate zones” for specialty plants and early spring interest.

D. Practical visit note (helpful if you’re planning a day):
Planting Fields Foundation lists park hours as 9am–5pm daily. 

2) Bailey Arboretum in Locust Valley 

Why it’s worth your time: Bailey Arboretum is smaller than Planting Fields but extremely useful for homeowners because it feels closer to the scale of residential design. It’s an accredited arboretum on 42 acres, with trails and gardens that show smart planting in a North Shore setting. 

Landscaping lessons to steal (in a good way)

A. Woodland garden strategy (shade is not a problem—it’s an opportunity)
North Shore properties often have mature trees, and homeowners sometimes fight shade instead of designing for it. Bailey’s setting is a reminder that shade landscapes can be the most peaceful and lush—if you use the right palette.

How to apply at home:
For shade and part shade, think in layers:

• canopy: existing oaks, maples, beeches (or new shade trees where appropriate)
• understory: smaller ornamental trees or large shrubs
• ground layer: ferns, shade perennials, and tough groundcovers

The key is to plant masses and repeat, rather than creating a “collection” of one-of-everything.

B. Trails and circulation: paths make a landscape feel bigger
A property feels larger when it has destination points and a clear route—exactly what well-marked trails do. Bailey’s paths are a great reminder that the way you move through a yard matters as much as the plants.

How to apply at home:
Even a small yard can benefit from:

• a simple stepping-stone route to a bench
• a short gravel path to a firepit zone
• a service path that doubles as a garden walk

C. Visitor info (helpful for scheduling):
Bailey Arboretum notes it is open Wednesday–Sunday, 9am–5pm and mentions there are no fees for the 2025 season (donations appreciated). 

3) Muttontown Preserve / Coe Hall Grounds (Muttontown / Upper Brookville area)

Why it’s worth your time: While not branded strictly as an “arboretum” in the same way, this is a huge North Shore preserve with estate grounds, trails, and diverse habitat. The Village of Muttontown describes it as Nassau County’s largest nature preserve with nearly 550 acres, marked trails, and local wildflowers and trees. 
Nassau SWCD similarly describes the preserve at 568 acres with meadows, fields, forest, and freshwater lakes. 

Landscaping lessons (especially for larger properties)

A. Meadow edges and naturalistic design
If your property backs up woods or has open lawn areas, this is where you’ll get ideas for:

• meadow-style planting edges
• naturalistic screening
• “soft boundaries” that feel less formal than hedges

How to apply at home:
Instead of a hard line of shrubs, try a layered edge:

1. tall grasses and flowering perennials
2. mid-height shrubs in drifts
3. small trees punctuating the line
   It looks more natural, supports pollinators, and often handles deer pressure better when planned carefully.

B. Stormwater and grading: nature always wins
Preserve landscapes are good reminders that water patterns matter. You’ll see low points, wet zones, and the way plant communities shift based on drainage.

How to apply at home:
Before you plant, observe after heavy rain:

• where does water collect?
• where does it run?
• where does soil stay dry?

Then match plants to conditions, rather than fighting the site. This is one of the biggest long-term cost savers in landscape construction.

4) Old Westbury Gardens (Old Westbury)

Why it’s worth your time: Old Westbury Gardens is the North Shore’s “formal garden inspiration board” in real life—formal lines, symmetry, garden rooms, and manicured transitions. Their site describes 200 acres of formal gardens, landscaped grounds, woodlands, ponds, and lakes. 

Landscaping takeaways for homeowners

A. Formal structure is all about geometry and repetition
What makes formal gardens feel luxurious isn’t just the plant selection—it’s:

• clean lines
• repeated forms
• consistent edging
• intentional focal points

How to apply at home:
If you want a classic look, focus on:

• straight or gently aligned walkways
• clipped shrubs (or naturally tidy shrubs) in repeated patterns
• one strong focal point (urn, specimen tree, water feature, sculpture)
  A simple design executed cleanly beats a complex design executed halfway.

B. “Garden rooms” make entertaining easier
Formal properties teach this well: you’re not designing one big yard—you’re designing spaces with purpose:

• dining zone
• lounging zone
• lawn zone for kids/dogs
• quiet corner garden

How to apply at home:
Use planting and hardscape to define rooms:

• low hedges or ornamental grasses can act like “walls”
• a pergola or pavilion makes an outdoor room feel finished
• changes in paving pattern help separate areas without fences

C. Plan-your-visit note:
Old Westbury Gardens’ site lists an address and indicates seasonal reopening details (for example, it notes reopening on April 1, 2026). 
(Always double-check before you go, especially in winter and early spring.)

5) Clark Botanic Garden (Albertson — a short drive from Oyster Bay)

Why it’s worth your time: Clark Botanic Garden is smaller and very homeowner-friendly. It’s a place you can study residential-scale plant combinations: perennials, shrubs, small trees, pond edges, and seasonal beds.

Landscaping lessons you can directly translate to your yard

A. “Small garden, big impact” planting
Smaller gardens force good habits:

• fewer plant varieties, used more intentionally
• stronger repetition
• better seasonal planning
  You can take those lessons and apply them to foundation plantings, side yards, and pool landscapes.

B. Visitor info:
Clark Botanic Garden lists hours 7 days a week, year-round, with seasonal time ranges (April–mid October 10am–6pm; November–March 10am–4pm). 
The Town of North Hempstead also lists the location and similar hours. 

6) Nassau County Museum of Art Outdoors (Roslyn Harbor) — Arboretum & Sculpture Garden Feel

Why it’s worth your time: This isn’t a traditional arboretum, but it’s a landscaping destination because it combines formal gardens, woods, ponds, fields, and outdoor sculpture—great inspiration if you like landscapes that feel curated but natural.

Their outdoors description highlights the 145-acre grounds of the William Cullen Bryant Preserve, with formal gardens and an outdoor sculpture collection. 
They also describe an “Arboretum & Sculpture Garden” open daily 9am to dusk. 

Landscaping lessons

A. Focal points change how you experience a landscape
Sculpture functions like:

• a specimen boulder
• a water feature
• a feature tree
  It pulls you through the space. Homeowners can replicate that with a single strong focal element placed at the end of a path or across a lawn view.

B. The “curated nature” balance
This is a great place to study how:

• mown areas transition to meadow
• woodland edges are kept clean
• paths stay clear even in natural settings

If you want a landscape that doesn’t feel overly formal, but still looks maintained, this is your inspiration.

How to Use These Arboretums as Your Landscaping “Blueprint”

If you visit even one or two of these places with a landscaping mindset, you’ll leave with more useful ideas than scrolling photos online for hours. Here’s a simple way to do it:

1) Take photos in categories

Instead of random pictures, capture:

• edges (where lawn meets beds, where beds meet woods)
• path design (materials, widths, curves)
• plant layers (groundcover / mid shrubs / tall canopy)
• focal points (what grabs your attention and why)

2) Pay attention to maintenance cues

Great landscapes look great because they’re maintainable. Notice:

• bed shapes that allow easy edging
• mulch rings and how trees are grouped
• where pruning keeps sightlines open
• how plant masses simplify upkeep

3) Translate big-estate ideas into residential scale

You don’t need 400 acres to copy the principles:

• one strong view line
• a simple path
• layered screening
• a clean “garden room” for entertaining
  Those ideas scale down perfectly.

Quick “Where to Go” Summary (Oyster Bay + Nearby)

• Planting Fields Arboretum (Oyster Bay/Upper Brookville): big estate-scale inspiration + greenhouses + gardens
• Bailey Arboretum (Locust Valley): residential-scale woodland planting and trails
• Muttontown Preserve: naturalistic meadow/woodland lessons and site-drainage observations
• Old Westbury Gardens: formal garden structure, symmetry, outdoor rooms
• Clark Botanic Garden: compact, homeowner-friendly plant combinations
• Nassau County Museum of Art Outdoors: curated nature + focal point inspiration