New Jersey Nature Guide: March 2026
Data updated: August 2026Sources & method · Corrections
March is the hinge of the New Jersey year, when winter loosens its grip and the first migrants and wildflowers arrive. Red-winged blackbirds claim the marshes, ospreys return to coastal platforms, spring peepers begin to call, and the spring ephemerals stir on the forest floor.
Week by week in March
February 26 – March 4
- Red-winged blackbirds and common grackles begin flooding back to claim the marshes, their songs the unmistakable sound of the turning season.
- In the mildest southern gardens, snowdrops, winter aconite, and crocus nose up, and pussy willows show their silvery catkins along the streams.
- As soon as the soil crumbles in your hand, the earliest gardens can direct-sow peas and spinach in the south.
March 5–11
- Eastern phoebes, the earliest returning flycatcher, reappear at bridges and barns, and woodcock begin their twilight sky-dance over wet thickets.
- The first spring ephemerals open on the forest floor — bloodroot, spring beauty, and hepatica — racing to bloom before the canopy closes.
- Direct-sow peas, spinach, lettuce, and radishes as the soil dries, and plant onion sets and seed potatoes in the warming beds.
March 12–18
- Ospreys return to the nesting platforms along Delaware Bay and the back bays, a celebrated mid-March arrival on the New Jersey coast.
- Skunk cabbage unfurls its huge green leaves in the wet woods, and forsythia blazes yellow along roadsides and yards.
- Follow the Big Dipper's handle to brilliant orange Arcturus rising in the east, the leading star of the spring sky.
March 19–25
- The spring equinox around March 20 brings day and night to near-equal length, and from here the nights shorten quickly.
- The first pine warblers sing in the Pine Barrens, and waterfowl migration peaks with pintail, wigeon, and teal on the flooded marshes.
- Shadbush opens the first white blossoms along the wood edges, named for blooming when the shad run up the rivers.
March 26 – April 1
- The first butterflies of the year take wing on warm days — overwintered mourning cloaks patrol sunny woodland openings, often over lingering snow.
- Tree swallows sweep low over ponds and marshes, and the eerie churring of the eastern whip-poor-will begins at dusk in the Pine Barrens.
- The native spicebush hazes the moist woods with tiny yellow flowers, and red maple flowers redden the swamp canopy.
Birds This Month
March is when migration restarts in New Jersey. Red-winged blackbirds and common grackles flood back to claim the marshes, their songs the unmistakable sound of the turning season, and American robins and eastern bluebirds reappear on lawns and field edges. Ospreys return to the nesting platforms along the bays and coast in mid-to-late month — a celebrated arrival on the Delaware Bay and the back bays — and woodcock begin their twilight "peent-and-sky-dance" display over wet thickets.
Wintering waterfowl are still present but thinning, and waterfowl migration peaks: snow geese and tundra swans mass at the Forsythe refuge, and a great variety of ducks — northern pintail, American wigeon, green-winged teal, and northern shoveler — gather on flooded marshes. The first pine warblers sing in the Pine Barrens, and eastern phoebes, the earliest returning flycatcher, appear at bridges and barns.
This month's tip: visit a wet field or thicket at dusk in the first warm week to witness the male woodcock's spiraling courtship flight, one of New Jersey's great spring spectacles.
What's Blooming
March brings the first true wave of color. The earliest spring ephemerals open on the forest floor before the canopy leafs out: bloodroot unfurls its white petals around a single lobed leaf, spring beauty carpets rich woods in pink-veined stars, and hepatica and trout lily appear in the Highlands and Piedmont. In wet woods, skunk cabbage now unfurls its huge green leaves, and marsh marigold begins in seeps and stream edges.
In gardens and parks, crocus, snowdrops, winter aconite, and the first daffodils bloom, and the swamp canopy reddens as red maple flowers open. The native spicebush hazes the moist woods with tiny yellow flowers, and forsythia blazes along roadsides. The shift from the held color of winter to the soft, fleeting color of the ephemeral spring is well underway by month's end.
Garden This Month
March is when the New Jersey garden wakes up. As soon as the soil is dry enough to crumble in your hand, direct-sow the hardy cool-season crops — peas, spinach, lettuce, radishes, carrots, and beets — and plant onion sets, shallots, and seed potatoes. Indoors under lights, start tomatoes, peppers, and eggplant now so they're stocky transplants by the safe planting time in May. Set out broccoli, cabbage, and other cole-crop transplants in the south under row cover.
Finish the last dormant pruning of fruit trees, grapes, and summer-blooming shrubs before they break bud, and cut back ornamental grasses and old perennial stems. Gradually pull back winter mulch as growth begins, but keep it handy — late frosts are still certain statewide, especially in the Highlands. Rake and edge beds, top-dress with compost, and resist working wet, heavy soil, which compacts and damages structure for the whole season.
Zone 6a (northwestern Highlands): still chilly and the soil is slow to thaw — start more seedlings indoors and wait. Toward the end of the month, the hardiest crops (peas, spinach, radishes) can go in once the ground is workable, later than the rest of the state.
Zone 7a (central & southern New Jersey): prime cool-season sowing — direct-sow peas, spinach, lettuce, radishes, and carrots, and set out onion sets and potatoes as the soil dries. Start tomatoes and peppers indoors now for May transplanting.
Zone 7b (southern shore & Cape May): the earliest gardens are already going — peas, greens, and root crops sown early in the month, and cole crops like broccoli and cabbage can be set out under protection toward month's end.
What's at the Farmers Market
March markets in New Jersey are in the lean shoulder season, but the offerings begin to brighten. Maple syrup from the northern hills is at its freshest, the sugaring season in full swing during the freeze-thaw weeks. Heated greenhouses keep spinach, lettuce, arugula, and other tender greens coming, sweeter for the cold, and the last storage roots — carrots, beets, parsnips, potatoes — and cabbage round out the table.
Cold-stored apples are nearing the end of their run but still eat well, and the first overwintered spinach and scallions from the field appear at southern stands toward month's end. Look for honey, eggs, and jarred preserves carrying the last of summer. Choose greens with crisp, bright leaves and use them within a few days, since they don't store. The market is still quiet, but every week now adds something fresh as the field season approaches.
Night Sky This Month
March straddles the seasons in the sky. Early in the evening the brilliant winter constellations — Orion, Taurus, and Gemini — still hang in the west, but they sink earlier each night as the spring sky takes over. Leo the lion rides high in the south, his backward-question-mark "sickle" and bright star Regulus easy to find, with the Big Dipper climbing high in the northeast and its handle arcing toward orange Arcturus rising in the east.
The spring equinox around March 20 brings day and night to near-equal length, and from here the nights shorten quickly. There is no major meteor shower this month, so it's a good time for galaxy-hunting: the realm of galaxies in Leo and Virgo rises in the east, faint smudges in a telescope from a dark site.
For the darkest skies, the heart of the Pine Barrens and the remote southern shore stay best, away from the New York and Philadelphia light domes. Exact planet positions vary year to year — the printable New Jersey night-sky guide carries this year's details for your area.
Butterflies & Pollinators
The first butterflies of the New Jersey year take wing in March on warm, sunny days. The overwintering adults lead the way: mourning cloaks, dark with cream-edged wings, patrol sunny woodland openings, often flying over lingering snow, joined by eastern commas and question marks, all of which slept the winter as adults. By late month the first fresh broods emerge — spring azures, tiny and pale blue, drift through flowering woods, and cabbage whites appear in gardens and fields. In the Pine Barrens, the pine elfin, a small brown hairstreak of the pitch pines, begins its brief, signature spring flight. Monarchs are still far to the south, only beginning their multi-generation journey northward; the first won't reach New Jersey until later in spring. Early-flying butterflies need warmth and nectar — the spicebush and early willows now blooming are crucial first food.
What to plant for them is in the New Jersey native plants guide
Trees This Month
March is leaf-out's overture in New Jersey. The earliest trees flower before they leaf: red maple and silver maple hang the swamps with tiny red and yellow flowers, American elm and green ash bloom inconspicuously, and the native spicebush hazes the moist understory yellow. The catkins of aspen, cottonwood, birch, and American hazelnut lengthen and shed pollen, and pussy willows show their silvery catkins along the streams.
The flowering of the woodland understory follows: by late month, shadbush (serviceberry) opens the first white blossoms along the wood edges, named for blooming when the shad run up the rivers. The evergreens — pitch pine, Atlantic white cedar, American holly, and the Highlands hemlock and white pine — still carry the green, but the bare deciduous canopy is now flushed with the reddish and yellowish tints of opening flowers and swelling buds, the first soft color of the returning forest.
The New Jersey native plants guide covers what grows with them
Weather & Daylight
Across New Jersey, a typical March day averages a high near 51°F and a low near 31°F, with about 4.2 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Raw and unsettled, temperatures swing from freezing mornings to milder afternoons while the heaviest rains of the season soak the ground.
| Average high | 51°F |
|---|---|
| Average low | 31°F |
| Precipitation | 4.2 in |
| Sunrise (mid-month) | 7:11 ET |
| Sunset (mid-month) | 19:04 ET |
Figures are statewide averages over the 1991–2020 U.S. climate normals; local conditions vary with elevation and distance from the coast. Sunrise and sunset are computed for a midstate point on the 15th (ET).
Next month's version of this page, by email
One short note when New Jersey's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the New Jersey guides
The complete New Jersey birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: March in New Mexico · March in New York · March in North Carolina