May is Tennessee at full bloom — breeding warblers fill the Smokies, mountain laurel and the first flame azalea open on the ridges, and at the very end of the month the synchronous fireflies begin their light show at Elkmont. From strawberry fields in the west to the cool spruce-fir summits, the green world is at its peak.
Week by week in May
April 30 – May 6
- The last northbound warblers — Blackpoll, Cape May, and the namesake Tennessee Warbler — stream through the treetops.
- Mountain laurel opens its pink-and-white cups along the Smokies trails and the first flame azalea flares orange.
- The Eta Aquariid meteors, debris of Halley's Comet, peak in the pre-dawn hours from a dark southern horizon.
May 7–13
- Whip-poor-wills and Chuck-will's-widows call through the night as the breeding season hits full song statewide.
- Strawberries reach their fragrant local peak across Middle and West Tennessee, the headline crop of May.
- Juniper hairstreaks gleam around the red cedars of the Central Basin glades as the swallowtails fly everywhere.
May 14–20
- The tulip poplar opens its orange-and-green tulip flowers high in the crown — the signal bloom of the Tennessee May.
- After the last frost passes even in the mountain coves, set out tomatoes, peppers, and basil and plant sweet potato slips.
- Iris, the state flower, peaks in gardens as fire pink and columbine line the Smokies trails.
May 21–27
- The magnificent Diana fritillary begins appearing in the rich Smokies coves as mountain specialties take wing.
- The Smokies high country sings with Canada, Blackburnian, and Chestnut-sided Warblers, Veeries, and Winter Wrens.
- Catawba rhododendron buds toward bloom on the high balds as flame azalea spreads across Gregory and Andrews Balds.
May 28 – June 3
- The synchronous fireflies begin their famous light show at Elkmont in the Smokies, peaking in these late-May and early-June nights.
- The first peaches and blackberries arrive as the last strawberries linger and new potatoes come in.
- Flame azalea blazes orange, scarlet, and gold across the Smokies balds at its peak.
Birds This Month
May is the peak and tail of Tennessee's spring migration, layered over the start of the breeding season. The last northbound warblers — Blackpoll, Bay-breasted, Cape May, Magnolia, and Tennessee Warblers (named from a migrant collected here) — stream through in the first half of the month, while the breeders settle onto territory. The Great Smoky Mountains reach their full glory as a breeding-warbler hotspot: Black-throated Blue, Blackburnian, Canada, Chestnut-sided, and Black-throated Green Warblers, Veeries, and high-elevation Winter Wrens and Dark-eyed Juncos sing along the slopes and balds.
In the lowlands the summer residents are nesting in full song — Indigo Buntings, Scarlet and Summer Tanagers, Wood Thrushes, Yellow-billed Cuckoos, Eastern Wood-Pewees, Acadian Flycatchers, and Yellow-breasted Chats. Ruby-throated Hummingbirds work the gardens, Chimney Swifts chatter overhead, Common Nighthawks boom at dusk, and Whip-poor-wills and Chuck-will's-widows call through the night. The dawn chorus is at its richest of the year before the leaves fully muffle it.
What's Blooming
May carries Tennessee's wildflower show up into the mountains and out into the meadows. In the Great Smoky Mountains the season climbs the slopes — mountain laurel opens its pink-and-white cups along the trails and ridges, the first flame azalea flares orange in the open woods, Catawba rhododendron buds toward bloom on the high ground, and fire pink, columbine, fly poison, and late trilliums line the paths. The grassy balds of Gregory and Andrews fill with bloom.
Across the lower country the late-spring flora takes over — spiderwort, fleabane, ox-eye daisy, golden ragwort, blue-eyed grass, fire pink, and the first coreopsis and black-eyed Susan in the old fields, with wild blue indigo and glade endemics in the cedar barrens of the Central Basin. The woody bloom continues with fragrant black locust, creamy fringe tree, sweetshrub, and the cucumber-magnolia and the first southern magnolia in the warm west. Gardens overflow with iris — the state flower — peonies, roses, and clematis.
Garden This Month
May is the warm-season planting peak across Tennessee, once the last frost has passed even on the high plateau and in the mountain coves (mid-May at the latest). Set out tomatoes, peppers, eggplant, and basil, and direct-sow the heat-lovers — beans, sweet corn, cucumbers, summer squash, melons, okra, and southern peas — into warm soil. Plant sweet potato slips, and start succession sowings of beans and corn to stretch the harvest.
The early garden begins to give back: pick strawberries, asparagus, lettuce, peas, spinach, and the first spring onions. Stake and cage tomatoes before they sprawl, mulch deeply to hold the moisture that Tennessee's coming heat will demand, and keep the new beds weeded. Pests wake fast in the warmth — scout for squash bugs, cucumber beetles, Colorado potato beetles, and the first hornworms, and hand-pick early. Pinch herbs to keep them bushy, deadhead spring flowers, and water new transplants through any dry spell as the soil warms and the days lengthen toward summer.
Zone 6a (high Cumberland Plateau & mountain coves): the latest frost in the state can strike into mid-May. Wait for it to pass before setting out tomatoes, peppers, squash, and basil, and keep covers ready for a cold mountain night even late in the month.
Zone 6b (Cumberland Plateau & East Tennessee valleys): the frost danger lifts early in the month. Plant the full warm-season garden — tomatoes, peppers, beans, squash, cucumbers, corn — and set sweet potato slips as the soil warms.
Zone 7a (Middle Tennessee & Nashville Basin): the warm-season garden is in full swing. Stake and mulch tomatoes, succession-sow beans and corn, plant okra and southern peas in the warming soil, and stay ahead of the first pests.
What's at the Farmers Market
May is when Tennessee's markets hit full spring stride. Strawberries are at their fragrant local peak across Middle and West Tennessee, the headline crop of the month, and the spring vegetables crowd the tables — asparagus, sugar snap and English peas, leaf lettuces, spinach, radishes, spring onions, new potatoes, and the first summer squash and cucumbers from high tunnels by late month.
The greens are tender and abundant before the heat — kale, chard, beet greens, and broccoli — and bunches of fresh culinary herbs, cut flowers, and the last vegetable transplants fill the stalls. Look too for spring honey, farm eggs, and goat cheese. Choose strawberries that are fully red and aromatic, since they will not ripen further off the plant; refrigerate them dry and unwashed in a single layer and use within a day or two. Pick peas with bright, full pods, snap a stalk of asparagus to test for tenderness, and buy the most tender greens you can use quickly before the warm weather toughens later crops.
Night Sky This Month
May's warm, settled nights are ideal at Tennessee's dark-sky sites. Pickett CCC Memorial State Park and Pogue Creek Canyon, the state's International Dark Sky Park on the northern Cumberland Plateau, the high Great Smoky Mountains overlooks, and the Bays Mountain Park observatory near Kingsport all run late-spring viewing, and the rising summer Milky Way begins to show from truly dark ground.
The spring stars fill the evening — Leo sinking west, the Big Dipper high overhead, and its arc leading to brilliant orange Arcturus in Boötes and on to blue-white Spica in Virgo. By late evening the Summer Triangle — Vega, Deneb, and Altair — clears the eastern horizon, hinting at the season ahead, and the head of Scorpius with red Antares rises in the southeast. The Eta Aquariid meteors, debris of Halley's Comet, peak in early May, best in the pre-dawn hours from a dark southern horizon. The printable Tennessee night-sky guide gives this year's exact peaks, planet positions, and dark-sky sites for your region.
Butterflies & Pollinators
May fills Tennessee with butterflies as the broods build. The swallowtails are everywhere — eastern tiger (the big summer form), zebra, spicebush, black, pipevine, and in the warm west the occasional giant swallowtail. Great spangled and silver-bordered fritillaries work the meadows, pearl crescents, common buckeyes, red-spotted purples, viceroys, and red admirals are common, and the gleaming juniper hairstreaks circle the cedar glades of the Central Basin.
The resident monarch generation grows through the month as caterpillars feed on milkweed in fields and roadsides; a tagged adult here is now Tennessee-born rather than a Mexican overwinterer. Cabbage whites, orange and cloudless sulphurs, eastern tailed-blues, and dozens of skippers crowd the gardens and fields. In the Great Smoky Mountains, mountain specialties such as the Diana fritillary begin appearing in the rich coves, and high-elevation species fly in the cool air. Native nectar — milkweed, coneflower, mountain mint, and joe-pye weed coming into bud — keeps the gardens busy from now through summer.
What to plant for them is in the Tennessee native plants guide
Trees This Month
May completes Tennessee's leaf-out, even on the highest summits, and turns the canopy to bloom. The tulip poplar — the state tree — opens its large orange-and-green tulip-shaped flowers high in the crown, fragrant and full of bees, the signal flower of the Tennessee May. The fragrant white chains of black locust drape the roadsides, the southern magnolia begins its huge creamy blooms in the warm west, and fringe tree, sourwood, and chestnut oak tassel and flower.
In the Great Smoky Mountains the green wave finally reaches the crest, the high spruce-fir forest of red spruce and Fraser fir flushing pale new growth at last, and the cove hardwoods stand in deep summer leaf below. The Smokies' famous mountain laurel and the first flame azalea bloom along the trails. Along the western rivers the bald cypress are in full feathery green over Reelfoot Lake. By month's end the forest is closed and shaded, the spring ephemerals gone dormant beneath it, and the trees settle into the long work of summer.
The Tennessee native plants guide covers what grows with them
Weather & Daylight
Across Tennessee, a typical May day averages a high near 78°F and a low near 55°F, with about 4.9 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Warm, soft late-spring air, highs near 78 and comfortably mild nights, rain showers still frequent but a little lighter.
| Average high | 78°F |
|---|---|
| Average low | 55°F |
| Precipitation | 4.9 in |
| Sunrise (mid-month) | 5:40 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 Tennessee's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the Tennessee guides
The complete Tennessee birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: May in Texas · May in Utah · May in Vermont