Indiana Nature Guide: March 2026
March is the great thaw in Indiana — mud season, the spring crane peak at Jasper-Pulaski, the first woodland ephemerals breaking ground, and the dawn chorus of woodcock and frogs returning to the wetlands. It is an unsettled, exhilarating month that can swing from snow to shirtsleeves in a single week.
What to look for this week
- Feeders are at their winter peak — northern cardinals, chickadees, tufted titmice, and juncos work the seed through the cold.
- The Quadrantid meteor shower peaks in a short, sharp burst around January 3; watch the northeast after midnight from a dark rural site.
- A planning week — order seeds early, especially short-season varieties for northern Indiana, before they sell out.
Birds This Month
March is one of Indiana's best birding months, driven by migration and display. The spring sandhill crane staging at Jasper-Pulaski FWA peaks now, with thousands of cranes loafing in the marshes and pouring out to the surrounding fields at dawn — bugling flocks that are among the great wildlife spectacles of the Midwest. Across the state, red-winged blackbirds and common grackles flood back to the marshes, eastern bluebirds and American robins become conspicuous, and the first eastern phoebes and tree swallows arrive.
At dusk in old fields and wet thickets, male American woodcocks begin their spiraling sky-dance, a peent-and-twitter display that is a beloved March ritual. Waterfowl migration crests on flooded fields and the wetlands of Goose Pond and Muscatatuck: northern shovelers, blue-winged teal, pintails, and tundra swans stage in big numbers, and the first ospreys appear over the water. Listen at dawn for chorus frogs and the cardinal song that now fills every neighborhood.
What's Blooming
March is when Indiana's wildflower season finally opens, beginning on the rich, sun-warmed forest floors of the south and center. The earliest spring ephemerals push up before the canopy leafs out: harbinger-of-spring (one of the very first, its tiny white flowers and dark anthers earning it the name "salt-and-pepper"), spring beauty with its pink-veined stars, cutleaf toothwort, hepatica, and the nodding white of bloodroot wrapped in its scalloped leaf. In wet woods and seeps, the gold of marsh marigold begins.
In gardens and parks the bulb display gets underway — crocus, then daffodils and the first hyacinths — and the shrubs join in with the yellow of forsythia and the pale flowers of spicebush and silver maple in the woods. The richest ephemeral displays are still building toward their April peak, but by late March a walk in the southern hardwood forests of Hoosier National Forest or along the Wabash bluffs already rewards a careful eye.
Garden This Month
March is when the Indiana garden finally wakes up, though it pivots entirely on whether the soil can be worked — squeeze a handful, and if it crumbles rather than smearing into a ball, it's ready. As soon as it is, direct-sow the hardy cool-season crops that thrive in cold soil: peas, spinach, lettuce, radishes, carrots, beets, and onion sets, and plant potatoes. This is also the prime window for bare-root planting — fruit trees, asparagus crowns, rhubarb, strawberries, and dormant perennials all establish best now.
Indoors under lights, start tomatoes, peppers, and eggplant so they're ready to transplant after the last frost in May. Finish dormant pruning before buds break, cut back ornamental grasses and last year's perennial stalks, and pull mulch back from emerging bulbs and crowns — but keep it close at hand, because a hard frost is still all but guaranteed. Hold off on working wet clay soil, which compacts into concrete if dug too soon.
Zone 5b (northern Indiana & the lake region): the ground is still cold and the last frost is weeks off. Start warm-season seedlings (tomatoes, peppers) indoors mid-to-late month, and outdoors sow only the hardiest crops — peas, spinach, radishes — once the soil can be worked late in March.
Zone 6a (central Indiana): as soil dries enough to crumble, direct-sow peas, spinach, lettuce, radishes, and onion sets, and plant potatoes and bare-root trees, asparagus, and rhubarb. Start tomatoes and peppers indoors early in the month.
Zone 6b (the southern Ohio River counties): the mildest corner is in full early-spring swing — sow all the cool-season crops, transplant cabbage and onion starts, and plant strawberries and bare-root fruit. Keep row cover handy for the inevitable late frost.
What's at the Farmers Market
March markets are still mostly indoor and still trading in storage crops, but the first signs of spring appear. The durable harvest holds — storage onions, potatoes, sweet potatoes, carrots, beets, and cabbage — now joined by the season's freshest greens from the hoop houses: spinach, kale, mâche, arugula, and microgreens, with the first cuttings of green onions and overwintered herbs.
The star of March is maple syrup, with the sugaring season at its height across the southern and central hills and sugar camps selling fresh syrup and holding open houses. Eggs are plentiful and richly colored as hens respond to lengthening days, and you'll find honey, jarred preserves, and the last cold-stored apples. This is also the start of the bedding-plant and seed-potato season at the larger markets and nurseries. Choose the brightest, crispest greens and use them within a few days; keep maple syrup refrigerated after opening.
Night Sky This Month
March brings the spring equinox and a transitional sky, the brilliant winter constellations sliding into the west after dusk while the fainter stars of spring climb in the east. Catch Orion and the Winter Hexagon low in the southwest early in the evening before they set. In the east, the backward-question-mark of Leo the Lion rises with its bright star Regulus, the herald of the spring sky, and the Big Dipper swings high overhead, its handle arcing toward orange Arcturus climbing in the northeast.
There is no major meteor shower in March, so it is a month for the constellations and for the lengthening twilight. With the clocks sprung forward, full darkness comes late, but the milder nights make for comfortable viewing — try the dark skies south of Bloomington or over Goose Pond. The faint smudge of the Beehive Cluster in Cancer rides high between Gemini and Leo. The printable Indiana night-sky guide lists this year's exact planet positions and the equinox details for your location.
Butterflies & Pollinators
March brings Indiana's first reliable butterflies as the overwintering adults emerge on warm, sunny days. The dark, cream-edged mourning cloak is usually the first on the wing, gliding through still-bare woods and sometimes flying over patches of snow. It is soon joined by the other adult-overwintering species — the eastern comma, question mark, and the gray compton tortoiseshell — all of them looking worn after a long winter. Late in the month the first newly emerged butterflies appear: the small, sky-blue spring azure dancing at woodland edges, the orange-and-brown eastern tailed-blue, and the ubiquitous cabbage white.
These early fliers nectar on whatever is open — willow catkins, dandelions, spring beauty, and the first garden crocuses — and bask on sun-warmed logs and south-facing slopes to raise their body temperature enough to fly. The monarchs are still far to the south, with the first generation only beginning its long northward journey out of Texas. Plant or sow native milkweed now so it's established when they arrive in May.
Trees This Month
March is when Indiana's trees break their long dormancy, and the flowering happens before most leaves appear. The maples lead: silver and red maples hang their tiny red and yellow flowers in bottomlands, and the sugar run finishes in the sugar maples as the buds swell. American elm and boxelder flower early too, often unnoticed high in the crown. In the understory, the pale yellow haze of spicebush lights up moist woods, and the swelling buds of eastern redbud hint at the magenta to come.
The willows show their silver catkins along every wet ditch and streambank, and the aspens and cottonwoods dangle their long catkins. Late in the month the very first leaf-out may begin in the south on elderberry and honeysuckle (the invasive bush honeysuckle leafs out early, a problem for the native woods). The native evergreens hold steady, and the marcescent beech and oak leaves finally begin to loosen and drop as new buds push them off.
Go deeper with the Indiana guides
The complete Indiana birding, native-plant, wildflower, and night-sky guides — or the whole year in one bundle.
Same month elsewhere: March in Iowa · March in Kansas · March in Kentucky