Understand How to Landscape Around Trees

There is something grounding about a mature tree on a Hamptons property. It might be a towering oak that has stood through decades of coastal storms, or a row of evergreens that shield a backyard from ocean winds. We have walked onto many properties where the trees were the most beautiful feature, yet the area around them felt unfinished, compacted, or simply forgotten.

Homeowners often tell us they are unsure what to plant beneath their trees or how to make the space look intentional without harming the roots. Around here, that concern is valid. Between sandy soils, salt air, nor’easters, and humid summers, the wrong approach can stress even the healthiest tree. When clients ask us how to landscape around trees, we always begin with one guiding principle: protect the tree first, then design the space to support it.

Start With the Root Zone, Not the Plants

Before thinking about flowers, stone edging, or decorative mulch, it is important to understand what is happening underground.

Tree roots extend far beyond the trunk. In many cases, they spread out two to three times the width of the canopy. Most feeder roots, the ones responsible for absorbing water and nutrients, sit within the top 12 to 18 inches of soil. This makes them especially vulnerable to:

• Soil compaction from foot traffic or equipment
• Excess soil piled against the trunk
• Improper planting of new shrubs too close to major roots
• Overwatering in poorly draining areas

In the Hamptons, where we often deal with sandy soil in some neighborhoods and heavier clay pockets in others, drainage patterns can vary significantly from one property to the next. We evaluate each tree individually before designing around it.

Avoid the “Mulch Volcano”

One of the most common mistakes we see is mulch piled high against the trunk. It may look tidy at first, but it traps moisture against the bark and can lead to rot, pests, and fungal issues.

Instead:

• Keep mulch 2 to 3 inches deep
• Leave a few inches of space around the trunk
• Extend the mulch ring out toward the drip line when possible

A wide, shallow mulch bed protects roots, regulates soil temperature, and reduces competition from turf grass.

Consider Light and Water Conditions Under the Canopy

Landscaping around trees is not just about aesthetics. It is about understanding microclimates.

Under a dense canopy, sunlight can be limited. In spring, deciduous trees allow more light through before leafing out, which creates a short window for early bloomers. By mid-summer, shade increases and the soil can become dry due to root competition.

In the Hamptons, summer humidity combined with shaded, still air can also create conditions for fungal diseases. That is why plant selection matters.

Ask these questions before planting:

• Is this full shade, partial shade, or dappled light?
• Does irrigation reach this area consistently?
• Is the soil sandy and fast-draining, or does it retain moisture?
• Is the tree close to the coast and exposed to salt spray?

Answering these questions will guide your plant choices.

Choose Plants That Thrive Beneath Trees

When clients ask how to landscape around trees without stressing them, we recommend plants that can handle root competition and variable light.

Here are some excellent options for Hamptons properties:

Shade-Tolerant Perennials

• Hostas, especially in more sheltered yards
• Ferns, which thrive in filtered light and add texture
• Astilbe for soft summer color
• Heuchera for foliage interest

These plants perform well in partial shade and can create a layered, natural look.

Native and Adaptable Groundcovers

• Pachysandra for consistent coverage
• Sweet woodruff in cooler, shaded spots
• Carex varieties that handle drier shade
• Native woodland groundcovers suited to Long Island soils

Groundcovers reduce the need for mowing around exposed roots and create a cohesive appearance.

Bulbs for Early Season Interest

Spring bulbs are particularly effective beneath deciduous trees. They bloom before the canopy fills in and complete their life cycle before heavy shade sets in.

• Snowdrops
• Crocus
• Daffodils

These provide color in early spring, which is especially welcome after a long coastal winter.

Avoid Digging Too Deep

When planting under trees, shallow planting is critical. Digging large holes can damage structural roots.

Instead:

• Use small starter plants or plugs
• Tuck them between visible roots
• Add compost gently without disturbing the root flare

If the soil is heavily compacted, consider top-dressing with compost over time rather than aggressive tilling. This gradual improvement supports soil life without stressing the tree.

Define the Space With Thoughtful Edging

A defined edge transforms a simple mulch ring into a designed feature.

Options that work well in the Hamptons include:

• Natural stone edging that echoes traditional estate gardens
• Low steel edging for a clean, modern look
• Brick edging for classic properties

Stone is especially popular on East End properties because it blends beautifully with coastal architecture and historic homes.

Keep edging shallow and avoid cutting into major roots. The goal is to frame the space, not create a barrier that interferes with drainage.

Rethink Grass Around Trees

Grass struggles under mature trees due to shade and root competition. It often becomes thin and patchy, leading homeowners to overwater or overfertilize.

Replacing grass with a mulched bed or shade-tolerant planting area reduces maintenance and improves the tree’s health. It also eliminates the need to mow close to the trunk, which can cause mechanical damage over time.

On several properties, we have redesigned tree bases to transition from turf to layered planting beds. This small change can significantly elevate the look of a yard while supporting long-term tree vitality.

Be Mindful of Drainage and Coastal Weather

Our coastal environment introduces additional considerations.

Salt spray and strong winds can dry out soil quickly. At the same time, heavy summer downpours and occasional nor’easters can saturate low-lying areas.

When landscaping around trees:

• Avoid creating raised beds that bury the trunk
• Ensure water drains away from the root flare
• Use mulch to moderate soil temperature in winter and summer

In sandy soils common throughout parts of the Hamptons, moisture drains quickly. Organic mulch helps retain enough water for both tree roots and understory plants. In denser soils, improving drainage may require subtle grading adjustments.

Add Visual Interest Without Overcrowding

It is tempting to fill every open space with plants, but restraint creates a more refined result.

A balanced tree bed often includes:

• A simple groundcover base
• Clusters of perennials in odd-number groupings
• Occasional seasonal accents

Avoid planting large shrubs directly under the canopy of mature trees. They compete aggressively for water and nutrients and can disrupt airflow.

Lighting can also enhance the space. Low-voltage uplighting positioned carefully outside major root zones highlights the trunk and canopy at night, creating dramatic yet elegant effects without disturbing the soil structure.

Protect Trees During Construction or Renovation

If you are renovating your property, tree protection must be planned in advance.

Construction traffic compacts soil rapidly. In some cases, damage is not visible for years.

We recommend:

• Installing temporary fencing around the drip line
• Avoiding material storage beneath trees
• Limiting trenching near major roots

When clients engage us for larger outdoor projects, we assess tree protection early in the planning process. Preserving mature trees adds long-term value and character that cannot be replaced quickly.

Seasonal Care Around Trees in the Hamptons

Spring

• Refresh mulch lightly
• Inspect for winter damage
• Add compost top-dressing

Summer

• Monitor irrigation, especially during dry stretches
• Watch for fungal issues in humid conditions
• Prune only if necessary and at appropriate times

Fall

• Remove excessive leaf buildup if it smothers groundcovers
• Plant spring bulbs beneath deciduous trees

Winter

• Avoid piling snow mixed with road salt at the base
• Check for wind damage after storms

Each season brings different demands. A consistent maintenance approach keeps the entire planting area healthy and balanced.

A Thoughtful Approach Makes the Difference

Landscaping around trees is not just about filling empty space. It is about respecting the life and structure of the tree while shaping the surrounding area into something intentional and beautiful.

When we work on Hamptons properties, we treat mature trees as architectural anchors. They guide layout decisions, influence plant selection, and shape how outdoor spaces feel throughout the year.

If you are unsure how to landscape around trees on your property, begin by observing light patterns, soil conditions, and root exposure. Start small. Expand mulch rings. Introduce shade-tolerant plantings gradually. Over time, the area will transition from neglected to integrated.

A mature tree can be the quiet centerpiece of your outdoor space. With careful planning and an understanding of our local coastal climate, the ground beneath it can become just as beautiful as the canopy above.