• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

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  • Trail Closure Information

    The Highland Creek Trail is closed. Backcountry Zones 1 and 2 are closed to all off-trail travel and use. The Sanctuary and Centennial Trails remain open to through traffic.

  • Temporary Road Closure Information

    Oct. 18 & 19: NPS 5 and 6 are closed for the entire weekend. Monday, Oct. 20, through Wednesday, Oct. 22, NPS 5 will be closed from Highway 87 to NPS 6. Highway 87 will be closed from Road 342 (Beaver Creek Road) north to the park boundary.

Seed Study - Dalea purpurea

Species: Dalea purpurea
Common name: purple prairie clover

Dalea purpurea – purple prairie clover
Average number of good seeds per gram bulk matter: 22 (10)
Average number of good seeds per gram cleaned: n.m.
Commercial estimates of seeds per gram: 639
Percent seed: 95-100
Percent live: n.m
Collection dates: August 25, 26 and 30
Collection effort: 23 grams in 6 person hours
Collection notes: Easy to collect once plants are found, but collect more than expected because of insect damage. Also beware of confusing this species with Dalea candida because they often grow together.
Cleaning notes: Bulk measurement included calyx and bad seed.

Did You Know?


Wind Cave is one of the longest caves in the world and has an amazing amount of a rare cave formation called boxwork. More...