New Hampshire Nature Guide: April 2026
Data updated: August 2026Sources & method · Corrections
April is true spring's arrival in lowland New Hampshire — peepers chorus from the wetlands, the first ephemerals open on the forest floor, and migration accelerates, while the White Mountains still hold deep snow above the valleys. The state greens from the Seacoast upward and the year's energy returns.
Week by week in April
April 2–8
- Tree swallows swoop over thawing ponds and pine and palm warblers lead the first wave of the warbler migration.
- Bloodroot, spring beauty, and hepatica open on the warmer southern forest floor, and marsh marigold glows in wet woods.
- As soil crumbles in the hand, direct-sow peas, spinach, lettuce, and radishes and plant potatoes and onion sets in the lowlands.
- "Arc to Arcturus" — the Big Dipper's handle curves to brilliant orange Arcturus rising in the east.
April 9–15
- Loons return to the lakes as the ice goes out, and ruffed grouse drum from the spring uplands.
- Trailing arbutus (mayflower) perfumes sandy pine woods, and trout lily and Dutchman's breeches open in the rich woods.
- Shadbush opens its lacy white flowers along streams — among the first trees to bloom — and the forest greens from the coast upward.
- The first true spring greens, rhubarb, and foraged ramps and fiddleheads appear at the markets. Cook fiddleheads thoroughly before eating — boil 15 minutes or steam 10–12; never raw.
April 16–22
- Hermit thrushes begin to sing, kinglets and winter wrens move through, and the first broad-winged hawks appear.
- The Lyrid meteor shower peaks around April 22 near bright Vega, best after midnight from a dark site.
- Set out hardened-off broccoli, cabbage, and lettuce transplants under row cover, and keep tomatoes growing indoors.
- The tiny powder-blue spring azure appears in the woods and cabbage whites return to gardens.
April 23–29
- Eastern bluebirds and tree swallows claim nest boxes, and the warbler wave builds toward its May crescendo.
- Forsythia blazes yellow along roadsides and the first daffodils and early tulips bloom in the garden.
- Hang hummingbird feeders by late April, just ahead of the first arrivals, and plant bare-root fruit trees and berries.
- Red maples set winged red samaras and the woods take on a faint green haze in the south.
Birds This Month
April migration surges across New Hampshire. Eastern phoebes arrive first among the flycatchers, tree swallows swoop over thawing ponds, and pine warblers, palm warblers, and yellow-rumped warblers lead the warbler wave. Ospreys return to Great Bay and lake nests, loons move back to the lakes as the ice goes out, and the first broad-winged hawks appear. Waterfowl peak on the rivers and Great Bay before pushing north.
This is the month of the American woodcock's twilight sky-dance over wet fields and the booming drum of the ruffed grouse in the uplands. Wild turkeys gobble and strut, eastern bluebirds and tree swallows claim nest boxes, and chipping sparrows, field sparrows, and brown-headed cowbirds return. Hermit thrushes begin to sing in the woods, and the first ruby-crowned and golden-crowned kinglets, winter wrens, and hermit thrushes filter through. Hang your hummingbird feeders by late April, just ahead of the first arrivals.
What's Blooming
April is when the New Hampshire forest floor finally bursts into spring ephemerals, racing to bloom before the canopy closes. In the rich, warmer southern woods come bloodroot, spring beauty, round-lobed hepatica, trout lily, Dutchman's breeches, and the first wild ginger, while marsh marigold glows gold in wet woods and seeps. Coltsfoot and the native bloodroot open in sunny disturbed ground, and trailing arbutus (mayflower) perfumes sandy pine woods.
In gardens, the bulb season peaks: crocus, daffodils, scilla, glory-of-the-snow, and early tulips bloom, and forsythia blazes yellow along roadsides. Pussy willow and the first shadbush (serviceberry) flower at woodland edges. The bloom runs weeks behind in the mountains and North Country, where the ground is just clearing of snow. The first half of April belongs to the south; the ephemeral wave climbs the state through the month, an early taste of the great wildflower flush to come in May.
Garden This Month
April is when New Hampshire gardens come alive in the lowlands. As soil dries enough to crumble in the hand, direct-sow the cool-season crops: peas, spinach, lettuce, arugula, radishes, carrots, beets, turnips, and kale, and plant potatoes, onion sets, and shallots. Set out hardened-off transplants of broccoli, cabbage, cauliflower, and lettuce under row cover. Indoors, keep tomatoes, peppers, and basil growing strong, and start squash, cucumbers, and melons a few weeks before the frost date.
Outdoors, finish dormant pruning before buds break, cut back last year's perennial stalks, divide and transplant perennials as they emerge, and top-dress beds with compost. Plant bare-root fruit trees, berries, asparagus, and rhubarb while dormant. Rake lawns gently once they've dried. Resist the urge to plant warm-season crops — the last frost is still weeks away everywhere in the state, from late May on the coast to mid-June in the mountains. Keep row cover handy for the inevitable hard April nights.
Zone 3b (high mountains & coldest north): still snow-bound much of April, with frost a daily certainty. Keep growing transplants indoors under lights and direct-sow nothing yet; the season here barely begins until mid-to-late May. Continue maple and early indoor work.
Zone 4b (North Country & uplands): snow recedes through the month but hard frost continues. As soil thaws and dries, direct-sow peas, spinach, and radishes late in April, and keep warm-season seedlings growing indoors well away from frost.
Zone 5b (interior & lakes region): the main soil-working month begins. Direct-sow peas, lettuce, spinach, carrots, beets, and radishes, plant potatoes and onion sets, and set out cole-crop transplants under cover; hold tomatoes and peppers for late May.
What's at the Farmers Market
April markets in New Hampshire bridge winter and spring. The last maple syrup of the season's boil arrives fresh, alongside the final winter-storage potatoes, carrots, beets, parsnips, cabbage, and onions. The first true spring crops appear by late month: greenhouse and field spinach, lettuce, arugula, and radishes, overwintered spinach and parsnips sweetened by frost, the first rhubarb, and foraged ramps and fiddleheads by month's end. Cook fiddleheads thoroughly before eating — boil 15 minutes or steam 10–12; never raw.
This is the start of plant-sale season: greenhouses and markets fill with vegetable seedlings, herbs, pansies, and cool-season annuals for gardeners eager to plant. Raw honey, farmstead cheeses, eggs, and pasture-raised meats round out the farm store. Choose the freshest, crispest greens and use them within days; pick firm rhubarb stalks and refrigerate them in a bag. Early-season fiddleheads should be tight, bright-green coils. The markets grow livelier each week as spring climbs the state from the Seacoast inland.
The New Hampshire native plants guide covers what grows here
Night Sky This Month
April nights are mild enough for comfortable stargazing as the spring sky takes over. Leo the Lion with bright Regulus stands high in the south, the Big Dipper rides overhead, and its handle arcs to brilliant orange Arcturus in Boötes and on to blue-white Spica in Virgo — the classic "arc to Arcturus, speed to Spica." The winter stars of Orion and the Hexagon sink into the western twilight.
The Lyrid meteor shower peaks around April 22, radiating from near bright Vega, which clears the northeastern horizon late in the evening; it is a modest but reliable shower, best after midnight from a dark site. The realm of galaxies in Leo, Virgo, and Coma Berenices climbs high, rewarding binoculars and telescopes from dark skies. The North Country and White Mountains offer the darkest views, and an aurora is possible on active nights. The printable New Hampshire night-sky guide gives this year's exact Lyrid peak and planet positions.
Butterflies & Pollinators
April brings New Hampshire's butterfly season to life in the lowlands. The overwintered mourning cloak, eastern comma, and gray comma are now flying freely on warm days, joined by the year's first fresh-brood species: the tiny powder-blue spring azure appears in the woods, the white-and-orange cabbage white returns to gardens, and the first clouded sulphurs and the early elfins and spring-flying duskywings show in dry, sunny clearings.
Migrants may arrive on southerly winds — the first red admirals and American ladies can appear in good flight years. The overwintered fliers seek out willow catkins, the first dandelions, and tree sap. The mountains and far north stay too cold for much butterfly activity yet. For gardeners, April is the time to plant native milkweed and a succession of nectar plants, and to hold off on cleaning up leaf litter and hollow stems until the weather settles, protecting the overwintering insects still emerging.
What to plant for them is in the New Hampshire native plants guide
Trees This Month
April is leaf-out's beginning in lowland New Hampshire and the close of sugaring. Red maple and silver maple finish flowering and set their winged red samaras, and sugar maple and the birches push out catkins and the first tiny leaves. Shadbush (serviceberry) opens its lacy white flowers along woodland edges and streams — among the first trees to bloom — followed by the first cherries and aspens leafing out.
The forest moves from gray to a faint green haze, climbing the state from the Seacoast upward through the month; the mountains and North Country lag well behind. The conifers — white pine, red spruce, balsam fir, and hemlock — stand dark and full as the deciduous canopy slowly fills in around them. Oaks, hickories, and ash are the last to stir, their buds barely swelling. By late April the south wears its first true green, while the high peaks remain bare and snow-streaked.
The New Hampshire native plants guide covers what grows with them
Weather & Daylight
Across New Hampshire, a typical April day averages a high near 54°F and a low near 30°F, with about 3.9 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Raw spring air, highs reaching a mild 54 but mornings still needing a jacket at 30, with frequent showers soaking the ground.
| Average high | 54°F |
|---|---|
| Average low | 30°F |
| Precipitation | 3.9 in |
| Sunrise (mid-month) | 6:05 ET |
| Sunset (mid-month) | 19:28 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 Hampshire's next month turns — what's arriving, blooming, and worth a night outside.
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The complete New Hampshire birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: April in New Jersey · April in New Mexico · April in New York