Skip to main content

We work to nurture connections between plants, people, past and present, in an inspiring natural setting that invites discovery. Our employees, Board of Directors, and Education Team make our operations and programs possible.


  • Mike Cooper, Interim Executive Director
  • Cindy Hulstein, Wedding & Event Coordinator
  • Lori Sheldon, Administrative Assistant 

Our board represents a cross-section of our community and has a passion for our organization and those we serve. The members work hard to ensure long-term sustainability of the organization.

Wegner Arboretum Society Board of Directors

  • Mike Cooper, Interim Executive Director 
  • Sue Aguilar, Board President
  • David Rezac, Vice President
  • Ann Kolbrek, Secretary
  • Ben Arndt , Treasurer
  • Mike Crane
  • Bridget O"Brien-Johnson 
  • Don Straka
  • Dr. Ann Wilson 
  • Michelle Erpenbach 
  • Paul DeJong 
  • Dick Dempster
  • Don Kearney, Director Sioux Falls Parks and Recreation 
  • Scott Anderson, Minnehaha County Planning Director
  • Duane Stall, Forestry Supervisor, City of Sioux Falls, Advisory

This group of educators formulated our mission statement for the Mabel & Judy Jasper Educational Center: Guests will gain an appreciation of nature and local history while developing a personal, direct, and life-long relationship to the land through formal and informal education and activities.

Education Team

  • Ann Wilson, Board Member
  • Ann Kolbrek, Chairperson
  • Pam Taylor Jansa
  • Bridget O'Brien-Johnson