Caring for a Dennis Yard Near the Water: Salt, Wind and Lawns

On the north side, Dennis Village and East Dennis sit along the Cape Cod Bay shore. The ground rises toward Scargo Hill, so many lots have slopes, older shade trees and established plantings. Winter storms tend to come in hard from the northeast here, and exposed hedges facing the bay often show wind burn by March. Shade and slope are the bigger lawn issues than heat.

On the south side, Dennis Port and West Dennis face Nantucket Sound. Lots are flatter and smaller, sunlight is strong, and the prevailing summer southwest breeze carries salt inland a surprising distance. Sand here drains almost instantly, so water and nutrients pass through the root zone before grass can use them.

South Dennis, in the middle, mixes both conditions, with marsh edges along the Swan River and Bass River. Before planning any project, it helps to ask three questions: How much direct salt spray reaches this spot? Which way does the strongest wind hit? Does the soil hold water at all after a rain?

Salt injury usually shows on the side of the plant facing the water. Look for brown needle tips on pines and junipers, scorched leaf edges on broadleaf shrubs and branches that leaf out late in spring on one side only. Damage is often worst after a dry, windy storm, because there is no rain to rinse salt off the foliage.

Two simple habits help. After a big blow, rinse exposed shrubs and the first few feet of lawn with fresh water to wash off salt. And give plants a little extra water in dry spells, since a drought stressed plant takes up more salt through its roots.

If a plant has struggled for two or three seasons in the same exposed spot, it is usually the wrong plant for that spot. Replacing it with something salt tolerant beats trying to nurse it along every year.

For the front line on either shore, lean on plants that already grow wild along the Cape coast. Northern bayberry, beach plum, rugosa rose and inkberry are reliable choices for hedges and borders. Native switchgrass and little bluestem add movement and handle sand and wind well. For trees, pitch pine and eastern red cedar are tough near the water, while many ornamental maples and dogwoods do better tucked behind the house.

Build in layers. A windbreak of tough shrubs on the exposed side protects softer perennials and lawn behind it. Even a three to four foot hedge of bayberry can cut wind and spray enough to change what survives in the beds behind it.

On the bay side, if your property is along Route 6A, check before adding a tall fence or wall as a windbreak. That area falls within the Old King's Highway Regional Historic District, and structures visible from the road may need review. A living hedge is often the simpler path and looks right on older homes.

Sandy lawns in Dennis Port and West Dennis need deep, infrequent watering, not a daily sprinkle. Watering early in the morning, enough to soak the root zone, encourages roots to go down. Shallow nightly watering keeps roots near the surface, where they cook in July.

Mow high. Keeping cool season grass around three inches tall shades the soil, slows moisture loss and crowds out crabgrass. Leave the clippings on the lawn; they return nutrients and a little organic matter, which sand badly needs. Core aeration plus overseeding in early fall, with fescues that tolerate drought and some salt, is the single best upgrade for a thin sound side lawn.

Feed lightly and on time. Massachusetts rules prohibit applying lawn fertilizer between December 1 and March 1, on frozen or saturated ground, and close to water bodies. Sand leaches nitrogen into groundwater and from there into the ponds, marshes and bays Dennis depends on, so small slow release feedings in spring and early fall work better than one heavy dose.

Spring (late March to May): clear winter debris, cut back grasses and perennials, rinse salt burned shrubs and prune out dead tips once new growth shows. Apply the first light lawn feeding after March 1 once the ground has thawed and dried. Spring is also a good time to plant salt tolerant shrubs.

Summer (June to August): mow high, water deeply in the morning and watch the water side of the property after storms. Avoid heavy fertilizing in July heat. On rental properties in Dennis Port, a regular mowing schedule keeps the yard looking cared for between guests.

Fall (September to November): this is the most important season. Aerate and overseed in early September, thin trees and remove deadwood before nor'easter season, and clear leaves before they mat on the lawn. Final cleanup usually waits until the oaks drop, which on the bay side is often into November.

Pitch pines and oaks dominate the Dennis canopy, and shallow roots in sand mean trees can fail in winds that would not bother them inland. The July 2019 storms left much of the Mid-Cape without power, and Dennis saw a large share of outages from trees on lines.

Walk your property each fall and look for dead tops, cracked or hanging limbs, trees that have started leaning and limbs over the roof or driveway. Thinning a crown lets wind pass through instead of pushing against it like a sail. Limbs touching utility lines are the utility company's job, so call them rather than cutting near the wires.

Best Cape Cod Landscaping is based in Mashpee and works in every town on the Cape, including all of the Dennis villages on both shores. We handle fall cleanup, tree trimming and removal, patios and walkways, and lawn care such as mowing, aeration and overseeding, with a plan suited to whichever side of town you are on.

We are insured, estimates are free and there is no visit fee. When the schedule allows, we can often come out the same day. If something we did is not right, we come back and redo it at no cost. If your yard is fighting salt, wind or sand, ask for a free estimate and we will walk the property with you.