Indiana Duneswildflowers
Most years, spring wildflowers on the Heron Rookery Trail peak from late April through mid-May, per the National Park Service: usually Most years, the wildflowers peak from late April through mid-May. Its usual window for this year has passed.
Right now at Indiana Dunes
Right now in Indiana Dunes · September
- Dunewood Campground open · Apr–Oct
- Fall colors, late September through October · Sep–Oct
Park alerts
NPS lists these 8 notices for Indiana Dunes National Park. Read each notice for the affected area and dates.
- Park Closure: Partial Trail Closures on Bailly / Chellberg Trail
- Park Closure: Partial Trail Closure - Dunewood Trace
- Park Closure: Closure - Hobart Woodland Trail
- Park Closure: Partial Closure - Upland Trail
- Park Closure: Closure - Heron Rookery Trail
- Caution: Water Safety Alert
- Park Closure: Partial Closures to Little Calumet River Trail and Glenwood Dunes Trail
- Caution: Partial Trail Closure at Portage Lakefront and Riverwalk
Checked Tue, Sep 29, 1:28 PM EDT, source: National Park Service. No claim to original U.S. Government works.
Next 7 days at Indiana Dunes
- TodayChance Rain Showers72° / 66°40% rain
- ThuRain Showers Likely75° / 58°87% rain
- FriRain Showers61° / 49°87% rain
- SatSlight Chance Rain Showers then Mostly Sunny62° / 50°15% rain
- SunMostly Sunny63° / 47°8% rain
- MonSunny60° / 43°3% rain
Heads up: Park closure: Partial Trail Closures on Bailly / Chellberg Trail; Park closure: Partial Trail Closure - Dunewood Trace; Park closure: Closure - Hobart Woodland Trail and 3 more.
Today: sunrise 6:45 a.m., sunset 6:33 p.m., light until 7:01 p.m. · moon waning gibbous, 78% lit (our calculation)
Your guide to the area
Best spots around Indiana Dunes National Park
- Heron Rookery TrailA flat 3.3-mile out-and-back along the Little Calumet River with the park's most extensive spring wildflower display (trillium, spring beauties, Dutchman's breeches). Start at the main gravel lot, 1336 600 East, Michigan City; no restrooms or water, and the packed dirt and clay can be very slippery and muddy
- Little Calumet River and Mnoké Prairie trailsAnother place the park names for similar spring wildflowers: a stretch of the Little Calumet River and the restored Mnoké Prairie, from the Little Calumet River Trail lot at 401 Howe Road in Porter; wildflowers are among the trail system's features, and there are stairs and muddy stretches
Nearby
- Midewin Prairie58 mi3 separate phases, from blooms in June
- Necedah Refuge230 miJune through AugustSatMostly Sunny
- Cuyahoga Valley287 milate March to mid-MaySatSlight Chance Rain Showers
- Mammoth Cave310 mispring (March, April, and May)SatRain Showers Likely
- Daniel Boone National Forest311 milate March to late AprilSatRain Showers Likely
- Pictured Rocks332 mianytime between mid-April and early JuneSatAreas Of Frost then Mostly Sunny
The year at Indiana Dunes
- Mar: Maple Sugar TimeMar
- Dunewood Campground openNowApr–Oct
- Spring wildflowersApr–May
- Spring wildflowers on the Heron Rookery Trail peak most years, late April through mid-MayApr–May
- Fall colors, late September through OctoberNowSep–Oct
Questions people ask
When is peak wildflowers in Indiana Dunes National Park in 2027?
Most years, spring wildflowers on the Heron Rookery Trail peak from late April through mid-May, per the National Park Service: Most years, the wildflowers peak from late April through mid-May. That's the usual peak in the source's own words, not a forecast.
Is it blooming in Indiana Dunes National Park right now?
Not now: its usual wildflowers window for this year has passed. Next time: Most years, the wildflowers peak from late April through mid-May, usually.
Why do these flowers bloom so early?
Many are spring ephemerals: they race to finish their life cycle before the trees leaf out and shade the forest floor. The park's education page gives mid-April through May as the best time to see them in bloom.Source: National Park Service, Heron Rookery exploration (Indiana Dunes) ↗ (opens in a new tab)
Can I pick the wildflowers?
No. Stay on the official trail and leave the flowers where they are; removing plants is prohibited.Sources: National Park Service, Heron Rookery exploration (Indiana Dunes) ↗ (opens in a new tab), National Park Service, Indiana Dunes: Heron Rookery Trail ↗ (opens in a new tab)
Do I need a pass?
Yes, passes are required on these trails. A private vehicle pass is $25 for 1 to 7 days; Indiana Dunes State Park passes don't work in the national park.Sources: National Park Service, Indiana Dunes: Heron Rookery Trail ↗ (opens in a new tab), National Park Service, Indiana Dunes fees and passes ↗ (opens in a new tab)
Can I bring my dog?
Yes, on a leash 6 feet or shorter.Source: National Park Service, Indiana Dunes: Heron Rookery Trail ↗ (opens in a new tab)
Is any of it closed right now?
As of September 2026, sections of the Bailly-Chellberg trail system, which includes the Little Calumet River and Mnoké Prairie trails, are temporarily closed for construction; the park's partial-closure page has maps.Source: National Park Service, Bailly Homestead and Chellberg Farm trails ↗ (opens in a new tab)
What should I wear?
Sturdy shoes: the trail can be slippery and muddy. Ticks are present all year, and poison ivy can grow at the trail edges.Source: National Park Service, Indiana Dunes: Heron Rookery Trail ↗ (opens in a new tab)
Where are the best spots in Indiana Dunes National Park?
Heron Rookery Trail: a flat 3.3-mile out-and-back along the Little Calumet River with the park's most extensive spring wildflower display (trillium, spring beauties, Dutchman's breeches). Start at the main gravel lot, 1336 600 East, Michigan City; no restrooms or water, and the packed dirt and clay can be very slippery and muddy; Little Calumet River and Mnoké Prairie trails: another place the park names for similar spring wildflowers: a stretch of the Little Calumet River and the restored Mnoké Prairie, from the Little Calumet River Trail lot at 401 Howe Road in Porter; wildflowers are among the trail system's features, and there are stairs and muddy stretches.
When is the festival in Indiana Dunes National Park?
Maple Sugar Time, usually in Mar.
What is Indiana Dunes National Park like through the year?
Spring wildflowers (Apr–May), Dunewood Campground open (Apr–Oct), Maple Sugar Time (Mar), Spring wildflowers on the Heron Rookery Trail peak most years, late April through mid-May (Apr–May) and Fall colors, late September through October (Sep–Oct).
How we know · Sources (6)
How we know
National Park Service, Indiana Dunes: Heron Rookery Trail (opens in a new tab) (Sep 30) · National Park Service, Heron Rookery exploration (Indiana Dunes) (opens in a new tab) (Sep 30) · National Park Service, Indiana Dunes fees and passes (opens in a new tab) (Sep 30) · National Weather Service forecast and alerts (opens in a new tab) (Sep 29) · National Park Service, Bailly Homestead and Chellberg Farm trails (opens in a new tab) (Sep 26) · National Park Service, Indiana Dunes things to do (opens in a new tab) (Sep 26) National Park Service sources: no claim to original U.S. Government works.