North Dakota Nature Guide: March 2026
Data updated: August 2026Sources & method · Corrections
March is the great release on the Northern Plains. As the ice rots and the first sheetwater opens on the prairie, North Dakota becomes a staging ground for one of the continent's largest bird migrations — millions of snow geese pour north through the state, and the first ducks pile onto every thawing pothole.
Week by week in March
February 26 – March 4
- The first western meadowlarks may sing from fence posts in the warm southern counties, the prairie's signature voice returning.
- On a warm, sunny afternoon an overwintered mourning cloak may flutter along a wooded river draw, waking from behind cottonwood bark.
- Start tomatoes and peppers under lights now so they're stocky transplants by the mid-to-late-May planting window.
March 5–11
- Northbound snow geese begin staging in the south — clouds of white birds lifting off open water and waste-grain fields with a deafening roar.
- The reddish flowers of American elm, the state tree, open before any leaf, and plains cottonwood catkins lengthen along the rivers.
- The winter constellations slide west as Leo and the rising Big Dipper take over the eastern evening sky.
March 12–18
- As the potholes thaw, the first dabbling ducks arrive — northern pintail and mallard lead, settling onto every patch of open sheetwater.
- Sharp-tailed grouse begin gathering on their traditional dancing grounds at dawn, stamping and rattling on the still-brown prairie.
- As snow recedes, cut back last year's ornamental grasses and perennial stalks, but keep mulch on until the freeze-thaw cycle settles.
March 19–25
- The snow goose migration nears its peak — hundreds of thousands stage at refuges like J. Clark Salyer, with Ross's geese and tundra swans mixed in.
- The spring equinox brings a balanced sky, and the weeks around it are among the year's most active for the aurora borealis.
- Overwintered eastern commas and Compton tortoiseshells join the mourning cloaks on warm afternoons in the wooded draws and Turtle Mountains.
March 26 – April 1
- In the warmest years, the first pasqueflowers push silky lavender cups up through melting snow on gravelly south-facing prairie hilltops.
- Greater prairie-chickens begin booming and dancing on their leks on the Sheyenne National Grassland in the pre-dawn dark.
- Pussy willows in the wet draws push out silvery, furred catkins — one of the surest early signs of the turning prairie season.
Birds This Month
March is one of the great spectacles of the North Dakota year: the northbound snow goose migration. Hundreds of thousands — sometimes over a million — snow and Ross's geese stage on the open water and waste-grain fields, their swirling, deafening flocks lifting off staging marshes and refuge lakes in clouds. With them come greater white-fronted geese, Canada and cackling geese, and tundra swans. As the potholes thaw, the first dabbling ducks arrive — northern pintail and mallard lead, soon joined by gadwall, American wigeon, and blue-winged teal.
On the prairie itself, the season's signature sound returns: the bubbling, flute-like song of the western meadowlark, the state bird, from fence posts across the grass. Sharp-tailed grouse and greater prairie-chickens begin gathering on their traditional dancing grounds (leks) at dawn — the prairie-chickens famously on the Sheyenne National Grassland. Red-tailed hawks, American kestrels, and the first killdeer and red-winged blackbirds arrive as winter's snowy owls and rough-legged hawks drift back north.
This month's tip: check the North Dakota Game and Fish migration reports and visit a refuge like J. Clark Salyer or the Missouri River bottoms to catch the snow goose staging at its peak — timing follows the thaw and shifts a week or two each year.
What's Blooming
March still belongs to winter on most of the prairie, but the snow is rotting and the very first blooms are imminent. On warm, south-facing gravelly hilltops and badlands slopes, the pasqueflower — North Dakota's true harbinger and one of the earliest prairie wildflowers on the continent — pushes its silky, lavender, fur-cloaked blooms up through the last patches of snow in the final days of the month in the warmest years, though most years it waits for April. Pussy willows fatten in the wet draws, the catkins of plains cottonwood and American elm begin to swell, and the first green appears at the base of the prairie grass where snowmelt runs. Indoors, the seed-starting benches are full — peppers, early tomatoes, and cool-season transplants growing under lights toward a still-distant frost-free date.
Garden This Month
March is the bridge month for North Dakota gardeners — still mostly indoor work, but the finish line is in sight. Under lights, start tomatoes, peppers, and brassicas now so they're stocky transplants by the third week of May, the realistic outdoor planting window across most of the state. Prune apple, plum, and chokecherry while they're still dormant, and as the snow recedes, start cutting back last year's perennial stalks and ornamental grasses.
Be patient with the beds. North Dakota's March is a season of deceptive thaws and hard refreezes, and the freeze-thaw cycle does the real damage — heaving crowns and snapping new roots. Leave winter mulch and snow cover on perennials, strawberries, and fall garlic until the ground has thawed for good, usually April. When the snow finally leaves, gently firm any heaved perennials back down rather than pulling them, and wait for the soil to dry and crumble before you walk on or work it.
Zone 3b (far north): still snow and frozen ground for most of the month. Keep seed-starting indoors — tomatoes and peppers under lights now — and resist uncovering beds; March freeze-thaw heaves perennials. Start cool-season transplants for an early-May cold frame.
Zone 4a (central): snow recedes by late month. Start tomatoes, peppers, and brassicas indoors, prune dormant fruit trees, and prep cold frames — but keep mulch on perennials until the freeze-thaw cycle settles.
Zone 4b (southeast & Red River Valley): the first thaw arrives. Start warm-season seeds indoors, and on a workable day late in the month you can sow peas, spinach, and radishes outdoors under cover if the soil has dried enough to crumble.
What's at the Farmers Market
Outdoor markets are still weeks away, but North Dakota's indoor winter markets in Fargo, Bismarck, and Grand Forks run strong through March with the last of the storage harvest: Red River Valley potatoes, storage onions, carrots, beets, and cabbage, and the final winter squash. The pantry crops that define the state are always on hand — hard red spring wheat flour, sunflower oil and seeds, and dry beans.
This is also late-winter syrup season in the river country: a few producers tap boxelder and silver maple in the bottomlands for a thin, distinctive sap syrup that shows up at markets now. Look for North Dakota honey, chokecherry and juneberry preserves, fresh eggs, and the first heated-greenhouse greens — spinach, kale, and microgreens — that signal the turning season. Store roots cool and humid, and keep that hoop-house spinach refrigerated and use it quickly.
Night Sky This Month
March brings the equinox and a balanced sky to North Dakota's wide-open dark. The badlands of Theodore Roosevelt National Park remain the premier dark-sky destination in the state, and the empty grasslands of the Drift Prairie and the Sheyenne National Grassland still deliver near-pristine darkness before the short nights of summer arrive. The cold air stays clear and steady — bring layers and a thermos.
The brilliant winter constellations — Orion, Taurus, and Gemini — slide into the western evening sky as the spring stars climb the east: Leo the Lion with bright Regulus, and the rising sweep of the Big Dipper high overhead, its handle arcing down to orange Arcturus later in the night. North Dakota's high latitude keeps the aurora borealis in play, and the weeks around the equinox are statistically among the most active for northern lights along the prairie horizon.
Exact planet positions and this year's meteor dates change annually — the printable North Dakota night-sky guide lists current planet visibility and the darkest accessible viewing sites near you.
Butterflies & Pollinators
March can bring North Dakota's first butterfly of the year. On a warm, sunny afternoon in the back half of the month, an overwintered mourning cloak — dark wings edged in pale yellow — may flutter along a wooded river draw or shelterbelt, having waked from behind the bark of a plains cottonwood to bask and patrol for mates over ground still patched with snow. Other overwintering adults — the eastern comma and, in the wooded northeast and Turtle Mountains, the Compton tortoiseshell — may join them in a warm spell. These early fliers don't need flowers; they take tree sap and minerals from damp soil. The grassland species that make North Dakota's prairie special — the regal and Aphrodite fritillaries and the monarch — are all still far off, the fritillary caterpillars only now beginning to stir in the warming thatch as the violets break dormancy.
What to plant for them is in the North Dakota native plants guide
Trees This Month
March is when North Dakota's trees begin to wake. Sap rises in the bottomland boxelders and silver maples, and the earliest catkins swell: the reddish flower clusters of American elm (the state tree) open before any leaf, and the long catkins of plains cottonwood and the bottomland willows begin to lengthen along the river corridors. Pussy willows in the wet draws push out their silvery, furred catkins — one of the surest early signs of the turning season on the prairie.
The conifers of the shelterbelts and badlands — Rocky Mountain juniper, ponderosa pine, and planted Colorado blue spruce — green up as the light strengthens and start to release pollen by month's end. In the Turtle Mountains and Pembina Gorge, the quaking aspens redden at their twig tips and the bur oaks finally drop the last of their tan marcescent leaves as new buds prepare to break.
The North Dakota native plants guide covers what grows with them
Weather & Daylight
Across North Dakota, a typical March day averages a high near 37°F and a low near 17°F, with about 0.7 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Raw transition weather, chilly 37F afternoons over mud and frost as nights near 17F still bite hard.
| Average high | 37°F |
|---|---|
| Average low | 17°F |
| Precipitation | 0.7 in |
| Sunrise (mid-month) | 7:53 CT |
| Sunset (mid-month) | 19:43 CT |
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 (CT).
Next month's version of this page, by email
One short note when North Dakota's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the North Dakota guides
The complete North Dakota birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: March in Ohio · March in Oklahoma · March in Oregon