If you own property in Brewster, Wellfleet, Chatham, or anywhere else on the Outer or Upper Cape, you have almost certainly noticed what happens when a lawn meets a Cape Cod summer: it browns out by July, demands irrigation that neighboring ponds can barely spare, and produces exactly nothing of ecological value. Meanwhile, the pitch pine scrub just over the fence survives drought, salt spray, and whatever the Atlantic throws at it — no hose, no fertilizer, no maintenance crew.
That gap is the argument for native plant landscaping on Cape Cod. Not as a philosophical position, but as a practical one. The glacial outwash plain that forms the bones of this peninsula created a specific set of conditions — coarse, acidic, nutrient-poor sandy soil; maritime wind exposure; periodic drought; occasional salt spray — and the plants that evolved here over thousands of years are precisely adapted to all of it. Bringing them back to your property is the lowest-maintenance landscaping decision you can make.
This guide covers the invasive plants that should come out first, the native species that belong in their place, the groundwater and pond-health reasons these choices matter in Barnstable, Falmouth, Eastham, and Truro specifically, and what the Conservation Commission requires before you touch anything near a wetland.
Why Native Plant Landscaping Matters Specifically on Cape Cod
The Groundwater and Nitrogen Problem
Cape Cod's freshwater supply sits in a single-source aquifer beneath a peninsula with no bedrock barrier between your lawn and the water table. When you fertilize a conventional lawn here — even lightly — nitrogen moves through the sandy soil fast. That nitrogen ends up in ponds and embayments. Nitrogen loading is the primary driver of the algae blooms that have degraded Mashpee-Wakeby Pond, Oyster Pond in Falmouth, Nauset Marsh in Orleans, and dozens of other water bodies across the Cape.
Native plants require no fertilizer once established. They evolved in the Cape's inherently nutrient-poor soils and do not need supplementation. Swapping a fertilized lawn for a native planting is one of the most direct actions a private landowner can take to reduce their contribution to pond nitrogen loading.
Summer Water Use Restrictions
Multiple Cape Cod towns, including Brewster, Chatham, and Eastham, have implemented or are expanding water use restrictions due to aquifer draw-down concerns in summer. Native plantings — once established through one full growing season with supplemental watering — need no irrigation. Beach plum, bayberry, bearberry, little bluestem: none of these need a hose after year one. That is not a minor convenience. On a July afternoon in Truro when your well pressure is dropping, it matters.
Ecological Fit
The pitch pine/scrub oak barrens that define the inner Cape, the coastal heathlands of Truro and Wellfleet, the freshwater pond edges throughout Barnstable and Sandwich — these plant communities support native bees, specialist butterflies, breeding warblers, and dozens of bird species that a lawn simply cannot. Bear oak (Quercus ilicifolia) alone supports over 500 species of caterpillars, which feed the baby birds in your yard whether you see it happening or not.
The Invasive Plants to Remove First
Before you plant anything, understand what you are already growing and what needs to go. Invasive plants in Cape Cod's landscape do real ecological damage and several of them are entangled with serious pest and public health issues.
Japanese Barberry (Berberis thunbergii)
Listed as invasive in Massachusetts and banned from sale since 2009, Japanese barberry is still widespread on older Cape Cod properties. The dense, humid microclimate beneath barberry thickets supports white-footed mice — the primary reservoir for Lyme disease — at densities that produce blacklegged tick populations up to 15 times higher than surrounding vegetation. If you have barberry on your property in Barnstable or Bourne, removing it is a public health action as much as an ecological one.
Wear heavy gloves — the thorns are serious. Cut the shrub back to ground level and treat the cut stump immediately with a glyphosate or triclopyr product using a paintbrush or sponge applicator. This is more effective than digging out the root system on rocky Cape soil. Resprouts should be treated again the following season.
Oriental Bittersweet (Celastrus orbiculatus)
Do not confuse this with native American bittersweet (Celastrus scandens), which is uncommon and actually worth protecting. The invasive oriental species — identifiable by its orange and yellow fruit capsules clustered all along the stem, versus the native's red berries at branch tips — strangles trees by girdling the trunk and smothering canopy. Mature pitch pines in Wellfleet and Eastham have been killed by it.
Oriental bittersweet is extraordinarily persistent. Cut vines at the base, let the attached sections die in the canopy, and treat cut stumps aggressively. Expect to return for multiple seasons.
Japanese Knotweed (Reynoutria japonica)
This is the one that makes landscape contractors honest. Japanese knotweed spreads through underground rhizomes and can regrow from a fragment smaller than your thumbnail. Hand-pulling spreads it. Digging spreads it. The only reliable approaches are repeated cut-and-treat (cut to ground level, let resprout, treat with herbicide, repeat) or professional herbicide injection directly into hollow stems. Do not compost any knotweed material — it will establish itself wherever the compost goes.
If you have knotweed near a wetland buffer in Chatham or Orleans, you may need Conservation Commission involvement before treatment, since herbicide application near wetlands requires review. Call the ConCom office before starting.
Multiflora Rose (Rosa multiflora)
Thorny, fast-growing, bird-spread. Repeated cutting every few weeks during the growing season will weaken established plants over two to three years. Stump treatment with herbicide after cutting accelerates control. Unlike Japanese knotweed, multiflora rose is manageable by a determined homeowner.
Autumn Olive (Elaeagnus umbellata)
A nitrogen-fixing shrub — which sounds beneficial but in practice means it enriches Cape Cod's intentionally nutrient-poor soils and gives itself and other invasives a competitive advantage over native species that depend on low-nitrogen conditions. The silvery leaves and small red berries make it easy to identify. Cut and treat stumps thoroughly; it resprouts vigorously.
Phragmites (Phragmites australis, invasive subspecies)
The tall reed that fringes so many Cape Cod roadsides and pond edges is primarily the invasive European subspecies, which forms monocultures that displace native marsh vegetation. If you have Phragmites within or adjacent to a wetland — which is likely if you have it at all — do not begin any treatment without first contacting your town's Conservation Commission. Phragmites management in wetland buffers falls squarely within ConCom jurisdiction and in most towns requires at minimum a Request for Determination. The Town of Eastham and Town of Wellfleet have both produced guidance documents on Phragmites management that are worth requesting.
What to Plant: The Cape Cod Native Palette
Shrubs
Beach plum (Prunus maritima) is the iconic Cape Cod native — salt-tolerant, wind-tolerant, spectacular in late April bloom before the leaves fully open, and it produces edible fruit by August. Plant it in full sun in any sandy soil from Sandwich to Truro. Excellent along property edges and driveways.
Bayberry (Morella caroliniensis) is the other Cape Cod essential. Grey, waxy berries persist through winter and draw Yellow-rumped Warblers by the dozens. Extremely salt-tolerant. Works as an informal hedge or mass planting. Fixes atmospheric nitrogen naturally — plant it and the soil improves without you adding anything.
Inkberry (Ilex glabra) is the native holly for low wet spots. If you have a seasonally wet area in Brewster or Bourne where nothing will grow, inkberry will thrive. Evergreen, modest growth, glossy black berries for wildlife.
Native blueberry (Vaccinium corymbosum) offers spring flowers, summer fruit, and fall color unmatched by almost anything else in the Cape palette. It prefers the acidic, sandy, nutrient-poor soil that makes most other plants miserable.
Black chokeberry (Aronia melanocarpa) for wet areas and pond edges. Underused, highly effective, brilliant fall color.
Trees
Pitch pine (Pinus rigida) is the Cape's signature tree — the entire inner Cape from Bourne to Provincetown is pitch pine forest. It tolerates drought, salt, fire, and the poorest sand imaginable. If you are establishing a new planting on bare sand, pitch pine is your starting point.
American holly (Ilex opaca) provides year-round structure and winter berry color. One of the few broad-leafed evergreens that performs reliably on the Cape. Robins and cedar waxwings will find the berries.
Eastern red cedar (Juniperus virginiana) is faster-growing than American holly and equally bird-friendly. Common in Chatham and Orleans windbreak plantings for good reason.
Bear oak / scrub oak (Quercus ilicifolia) stays low and spreading — rarely more than 15 feet tall — and is perfectly adapted to the driest, windiest Cape Cod exposures. It is the keystone species of the pitch pine/scrub oak community and supports an extraordinary number of insect species, which in turn support birds.
Groundcovers and Perennials
Bearberry (Arctostaphylos uva-ursi) is the ideal native groundcover for Cape Cod sandy sites. Evergreen, mat-forming, red berries in fall. Use it instead of mulch on exposed banks or under pitch pines.
Little bluestem (Schizachyrium scoparium) turns the color of copper wire in fall and holds that color through January. Tough, drought-tolerant, supports skipper butterflies. Plant it in drifts along sunny banks.
Seaside goldenrod (Solidago sempervirens) blooms September through October and provides critical late-season pollinator resources. Salt spray-tolerant. Grows naturally at the upper edges of dunes in Truro and Wellfleet — it belongs anywhere on the outer Cape.
Broom crowberry (Corema conradii) is a Cape Cod specialty plant — a low, heath-like groundcover found naturally only on a handful of coastal plain heathlands in southeastern Massachusetts. If you have an exposed, sun-baked, sandy site in Truro or Eastham, this is worth planting. Very few nurseries carry it; source through native plant sales organized by conservation organizations.
Conservation Commission Jurisdiction Over Landscaping
This is the section that surprises second-home owners most: on Cape Cod, your landscaping decisions may require regulatory review.
Under the Massachusetts Wetlands Protection Act, any work — including planting, removal, grading, and in some interpretations, mowing — within 100 feet of a wetland resource area requires either a Notice of Intent filing or a Request for Determination of Applicability from your town's Conservation Commission. Wetland resource areas on Cape Cod include:
- Coastal dunes and beaches
- Salt marshes
- Freshwater ponds and their banks (generally to the ordinary high water mark)
- Inland wetlands (including the seasonally wet areas throughout Barnstable and Bourne)
- Bordering vegetated wetlands
- Land under wetlands
If your property touches any of these — which describes a large percentage of Cape Cod parcels — you are potentially within ConCom jurisdiction for landscaping work.
The good news on invasive removal: Most Cape Cod Conservation Commissions encourage invasive species removal within the buffer zone and have streamlined procedures for it. Barnstable, Chatham, and Orleans have all issued guidance indicating that hand-removal of listed invasive plants within the 100-foot buffer may not require a full filing, but you should call your town's ConCom office before beginning any work. Do not assume.
The Cape Cod Commission is a separate regional planning body and has jurisdiction over development projects above certain size thresholds, primarily in Barnstable, Falmouth, and the larger towns. For typical residential landscaping, you are dealing with your town's ConCom, not the regional commission — but on larger lots or complex coastal projects, both may apply.
Converting Lawn to Native Plantings
Removing an existing lawn and replacing it with native plantings is one of the highest-impact changes a Cape Cod property owner can make. It eliminates fertilizer runoff, eliminates irrigation demand, and creates functional habitat.
The two practical methods: solarization (covering the lawn with clear plastic through summer to kill the grass and weed seed bank, then planting into the dead turf in fall) or sod cutting (renting a sod cutter, removing the turf layer, and planting immediately). Both work. Solarization is slower but requires less equipment and soil disturbance.
Contact the Barnstable County Cooperative Extension office in Barnstable for Cape-specific native plant lists and soil preparation guidance. The Cape Cod Cooperative Extension Master Gardener program offers free consultations. Wild Care Cape Cod in Orleans has connections to local native plant sales held each spring through the Compact of Cape Cod Conservation Trusts.
FAQ
Do I need a permit to remove Japanese barberry or bittersweet from my property? If the plants are more than 100 feet from any wetland resource area, no permit is required. Within 100 feet of a wetland, contact your town's Conservation Commission first. Most ConComs have a simplified procedure for invasive removal and are happy to advise by phone.
Where can I buy Cape Cod native plants? Local native plant sales through conservation organizations are the best source for true local-genotype plants. Check the Compact of Cape Cod Conservation Trusts, Wild Care Cape Cod (Orleans), and the Cape Cod Horticultural Society. Some nurseries in Falmouth and Sandwich carry native species, but always verify the plant is actually a native variety rather than a cultivated selection bred for ornamental traits.
Can beach plum survive right on the shore in Chatham or Truro? Yes. Prunus maritima grows naturally on coastal bluffs and sandy dunes throughout the Outer Cape. It is one of the most salt- and wind-tolerant shrubs in the Cape's native palette.
My Wellfleet property is mostly pitch pine. Do I need to plant anything? Probably not much. If you have a healthy pitch pine/scrub oak canopy with an understory of native blueberry and bearberry, you have the Cape's native plant community intact. Focus on removing any invasives at the edges rather than adding new plantings.
Does removing a lawn require ConCom approval? If the lawn is outside the 100-foot wetland buffer, no. If it is within the buffer zone, a Request for Determination is typically the right first step — it is a simpler filing than a full Notice of Intent and helps you understand what, if anything, requires a formal permit.
Is phragmites removal something I can do myself? If the phragmites is on upland and away from any wetland, standard cut-and-treat methods work. If it is in or adjacent to a wetland — which it usually is — contact your ConCom first. Herbicide application in a wetland buffer in Barnstable County requires authorization, and in most towns there are specific approved protocols.
Work With a Certified Landscape Contractor
Native plant installation on Cape Cod is specialized work. The right contractor knows the difference between Solidago sempervirens and Solidago canadensis, understands ConCom filing requirements, and will not accidentally spread Japanese knotweed from a contaminated tool. Find vetted, certified landscape contractors serving Barnstable, Falmouth, Chatham, Brewster, Orleans, Eastham, Wellfleet, Sandwich, Truro, and Bourne through the Cape Cod Certified contractor directory — professionals who have been verified for licensing, insurance, and local knowledge.