Maryland Nature Guide: March 2026
March bursts Maryland into spring — Ospreys return to the Chesapeake nesting platforms, the first wildflowers carpet the Piedmont woods, spring peepers and wood frogs chorus from the wetlands, and the season's first warm days stir the garden across the whole state.
What to look for this week
- The Chesapeake waterfowl winter peaks — Tundra Swans, geese, and rafts of canvasback and redhead crowd Blackwater NWR as the Christmas Bird Counts wrap up across Maryland.
- The Quadrantid meteor shower peaks in a short, sharp burst around January 3 — watch after midnight from a dark site like Assateague Island or the Garrett County highlands.
- A planning week for Maryland gardeners — review last season and order seeds early before the popular varieties sell out, while the ground sits frozen.
Birds This Month
March is the great arrival month on the Chesapeake. Around the middle of the month, the Ospreys return to the Bay from South America, taking up their nesting platforms, channel markers, and pilings — their return is one of Maryland's most beloved signs of spring, and the upper Bay and tidal rivers fill with their whistling calls. The wintering Tundra Swans and most ducks depart north, while the first tree swallows, eastern phoebes, pine warblers, and chipping sparrows trickle in.
In the marshes and woods, the breeding season ignites. Red-winged blackbirds, common grackles, and brown-headed cowbirds flood the wetlands, woodcock dance over damp thickets at dusk, and wood ducks pair up on the swamps. Bald Eagles are already feeding young in the nest. Listen at dawn for the first eastern towhees, field sparrows, and the year's first Louisiana waterthrush singing along the rocky Piedmont streams late in the month. Backyard American goldfinches are brightening toward breeding yellow.
What's Blooming
March is when Maryland's spring ephemerals carpet the rich Piedmont woods. The first to open are bloodroot, with its white petals around a golden center, spring beauty in pink-veined drifts, cutleaf toothwort, hepatica, and the nodding yellow trout lily, soon joined by Dutchman's breeches and the unfurling fiddleheads of the woodland ferns. Along the floodplains of the Potomac and Patuxent, the first Virginia bluebells push up their purple-tinged shoots.
In the wetlands, skunk cabbage leaves expand into lush green rosettes, and marsh marigold brightens the seeps. Lawns and old fields show the first common blue violet, dandelion, and field pansy. In gardens, the season's color arrives in force — crocus, daffodils, hellebores, and forsythia blaze, and the earliest flowering cherries open in the Baltimore–Washington corridor, foreshadowing the famous cherry-blossom display along the Tidal Basin just over the line in the District. The woods change daily now.
Garden This Month
March is the start of the real outdoor gardening season across most of Maryland. As the soil dries and warms, direct-sow the cold-hardy crops — peas, spinach, lettuce, radishes, arugula, carrots, beets, and turnips — and set out transplants of onions, broccoli, cabbage, and kale. This is the window to plant potatoes, bare-root asparagus and strawberries, and bare-root fruit trees and brambles before they leaf out. Always work the soil only when it crumbles, never when it is wet and sticky.
Indoors under lights, start tomatoes, peppers, eggplant, and basil for setting out after the frost-free date in May. In the ornamental garden, cut back last year's perennial stems and ornamental grasses, divide crowded clumps as they emerge, prune roses and summer-blooming shrubs, and finish dormant pruning before the buds break. Apply a fresh layer of compost or mulch to the beds, and keep row cover handy — hard frosts are still very possible across the state through the whole month.
Zone 6b (western Maryland & the Frederick uplands): the latest spring in the state. Wait for the soil to dry before working it, then sow peas, spinach, and radishes by late month, and keep frost protection ready for the cold mountain nights.
Zone 7a (central Piedmont & the Baltimore–Washington corridor): prime early-spring sowing. Direct-sow peas, spinach, lettuce, radishes, carrots, and beets, set out onion sets and cabbage transplants, and plant bare-root fruit trees and asparagus crowns.
Zone 7b (lower Eastern Shore & the Bay's warming edge): the cool-season garden is in full swing. Sow successive peas and greens, transplant broccoli, cabbage, and kale, plant potatoes, and start tomatoes and peppers indoors for May setting-out.
What's at the Farmers Market
March markets in Maryland are still lean but brightening. The first fresh spring crops appear from greenhouses and the warming Eastern Shore — tender spinach, lettuce, arugula, mâche, and radishes, plus the season's earliest green onions and bundles of cut daffodils and tulips. Overwintered kale, collards, and leeks come in extra-sweet, and the last cellar apples, potatoes, and root vegetables carry the produce tables.
The western Maryland maple syrup run peaks now, and the state's maple festivals in Garrett County mark the season. Local eggs, honey, cheeses, and baked goods fill out the stands, and pasture-raised spring lamb and chicken begin to appear. Choose spring greens with crisp, deeply colored leaves and use them quickly, refrigerated in the crisper; pick firm radishes with fresh tops; and buy maple syrup by color grade for the flavor strength you prefer, keeping it sealed and cool.
Night Sky This Month
March's sky marks the handoff from winter to spring. Orion and the Winter Hexagon still command the early-evening southwest, but as the night deepens the spring constellations climb in the east — the backward question-mark of Leo the Lion with bright Regulus, followed by the sprawling faint stars of Virgo and the rich realm of galaxies between them, a feast for telescopes from a dark Maryland sky. The spring equinox near March 20 brings day and night into balance.
The Big Dipper rides high in the northeast, its pointer stars leading to Polaris, and its arc carrying down to brilliant orange Arcturus rising in the east. There is no major meteor shower this month, so March favors galaxy-hunting in Leo, Virgo, and Ursa Major under the steadier, milder nights. The wide horizons of the lower Eastern Shore and Assateague give the darkest skies. The printable Maryland night-sky guide lists this year's exact planet positions and the best dark-sky sites near you.
Butterflies & Pollinators
March brings Maryland's butterfly season back to life. The overwintering adults are now flying regularly on warm days — mourning cloaks, eastern commas, and question marks patrol sunny woodland edges and feed at sap flows and the first flowers. They are joined by the first newly emerged spring species: the tiny powder-blue spring azure, one of Maryland's earliest fresh butterflies, dancing along the warming woods and clearings.
By late month, the cabbage white appears in gardens and fields, and in the river bottoms the first falcate orangetip — a small, delicate white of moist Piedmont woods — flies low among the spring ephemerals it visits for nectar, its caterpillars feeding on toothwort and rockcress. The first eastern tiger swallowtails of the year may appear in the warmest southern parts of the state. Monarchs are still moving up through the Gulf states and remain weeks from reaching Maryland. Watch the early spring flowers and sunny lanes for the season's first fliers.
Trees This Month
March is the month the Maryland woods awaken. The flowering opens with the early bloomers: red maple finishes and sets red samaras, the magenta buds of eastern redbud begin to swell, and the first flowering cherries and ornamental magnolias open in the Baltimore–Washington corridor. The yellow-green flowers of spicebush haze the understory of the moist woods, and the catkins of willow, birch, and American elm hang ripe with pollen.
Buds swell and break across the canopy. The fat sticky buds of horsechestnut and buckeye unfold their first leaves, and the early haze of green appears on the weeping willows along the streams. On the Eastern Shore, the loblolly pines push their new candles, and the shadbush (serviceberry) begins to whiten the woodland edges late in the month — its bloom traditionally timed with the shad running up the Chesapeake's rivers. The tulip poplars and oaks remain bare but their buds are visibly fattening for April.
Go deeper with the Maryland guides
The complete Maryland birding, native-plant, wildflower, and night-sky guides — or the whole year in one bundle.
Same month elsewhere: March in Massachusetts · March in Michigan · March in Minnesota