Mammoth Cavewildflowers
Out of season: the next wildflowers season is in 2027.
Right now in Mammoth Cave · September
- Summer and fall wildflowers · Jun–Oct
154days to the next wildflowers seasonMar 1–May 31, Spring (March, April and May), the park's wildflower season, per NPS
Next 7 days
No frost, strong wind or heavy rain in the forecast.
National Weather Service forecast, issued Mon 2:25 AM (Eastern). Frost: a low of 36°F or less; wind: 20 mph or more; rain: 60% chance or more.
Mammoth Cave National Park through the year
- Spring wildflowersMar–May
- Wildflower DayApr
- Summer and fall wildflowersNowJun–Oct
- Busiest seasonJun–Aug
- Main campgrounds closedDec–Feb
Best spots around Mammoth Cave National Park
- Cedar Sink Trail1-mile loop down into a huge sinkhole full of spring and summer wildflowers; 295 stairs
- Green River Bluffs TrailNear the visitor center; wildflowers in bloom on the spring Wildflower Day hike
- Echo River Spring TrailLevel walk past springs where underground rivers leave the cave for the Green River
How we know
National Weather Service forecast and alerts (opens in a new tab) (Sep 28) · National Park Service, Mammoth Cave wildflowers (opens in a new tab) (Sep 27) · National Park Service, Explore Wildflowers at Cedar Sink (opens in a new tab) (Sep 27) · National Park Service, Mammoth Cave Wildflower Day (opens in a new tab) (Sep 27) · National Park Service, Visiting Mammoth Cave in spring (opens in a new tab) (Sep 26) · National Park Service, Visiting Mammoth Cave in summer (opens in a new tab) (Sep 26) · National Park Service, Visiting Mammoth Cave in fall (opens in a new tab) (Sep 26)
Questions people ask
When is peak wildflowers in Mammoth Cave National Park in 2027?
Spring (March, April and May), the park's wildflower season, per NPS: Mar 1–May 31. That's general timing for this place, not a peak date or a forecast.
Is it blooming in Mammoth Cave National Park right now?
Not now: the wildflowers season is over for this year. The next one starts in about 154 days (Mar 1–May 31, Spring (March, April and May), the park's wildflower season, per NPS).
When is wildflower season?
Spring, March through May, when the trail sides burst with color. Different flowers keep blooming from early March, when harbinger-of-spring appears, through October.Sources: National Park Service, Visiting Mammoth Cave in spring ↗ (opens in a new tab), National Park Service, Mammoth Cave wildflowers ↗ (opens in a new tab)
How hard is the Cedar Sink hike?
It's a 1-mile loop with about 295 stairs down into the sinkhole and back out. The trailhead is about 10 minutes from the visitor center, and its parking can fill up.Source: National Park Service, Explore Wildflowers at Cedar Sink ↗ (opens in a new tab)
Is there a wildflower event?
Yes, the park's annual Wildflower Day each spring, free, with guided wildflower hikes; in 2026 it was Saturday, April 11.Source: National Park Service, Mammoth Cave Wildflower Day ↗ (opens in a new tab)
Do I need to book cave tours in spring?
During spring break, cave tours can sell out weeks ahead, so buy tickets in advance.Source: National Park Service, Visiting Mammoth Cave in spring ↗ (opens in a new tab)
Where are the best spots in Mammoth Cave National Park?
Cedar Sink Trail: 1-mile loop down into a huge sinkhole full of spring and summer wildflowers; 295 stairs; Green River Bluffs Trail: near the visitor center; wildflowers in bloom on the spring Wildflower Day hike; Echo River Spring Trail: level walk past springs where underground rivers leave the cave for the Green River.
When is the festival in Mammoth Cave National Park?
Wildflower Day, usually in Apr.
Are there closures or permits to know about in Mammoth Cave National Park?
Main campgrounds closed (Dec–Feb).
What is Mammoth Cave National Park like through the year?
Spring wildflowers (Mar–May), Busiest season (Jun–Aug), Main campgrounds closed (Dec–Feb), Summer and fall wildflowers (Jun–Oct) and Wildflower Day (Apr).