Twelve Hills Nature Center

Project Title:  Twelve Hills Nature Center
Project Location:
817 Mary Cliff Road, Dallas, TX 75208
Project Website:
https://twelvehills.org

A five-acre nature center established on reclaimed land about twelve years ago. It serves as a place for the local community to access a nature area without driving, and as an outdoor classroom for neighboring schools. It is located in north Oak Cliff, 7 minutes west of the Bishop Arts District.

Volunteers plant native grasses and other native plant seeds, remove invasive plants, maintain and beautify the trails and entrance area. They also lead nature walks and help with school and neighborhood events at the site.

2024 Activities –   51 volunteers with 1,970 hours of service performed

Prairie Restoration:

  • The entire Nature Center, including the prairie and butterfly garden, continues to be managed by adding Backland Prairie plants and seeds and removing introduced and aggressive plants.
  • Workdays are held every Sunday; several volunteers work on the project daily. Workdays are held for a few groups throughout the year. Young Men’s Service League sent volunteers most weeks.
  • Professional tree-trimming was done to remove introduced trees and storm damage.

Education:

  • Mentored a 2024 class project team. The team learned how to restore disturbed land to Backland Prairie. A plant rescue was held to obtain local prairie plants.
  • Hosted Trinity River Crew teen internship. Interns learned about the Backland Prairie ecosystem and participated in a service project. Program is run by Trinity Park Conservancy and GreenSpace Dallas.
  • Nature Leaders was held in the spring. 18 students completed a 14-week program where they learned about the Backland Prairie, outdoor ethics, and how to lead nature walks. They led nature walks for their peers over a period of a week. Many of the class walks were rained out.
  • Walks for St. Cecilia’s Catholic School were held on Nov. 6 and 7. The topic was entomology.
  • Little Bisons, in partnership with Rosemont Early Childhood PTA and Rosemont Primary School was held 6 times in the spring and fall. Nature programs were presented for preschool children and parents.
  • West Dallas Community School families enjoyed a nature walk.
  • We continue to participate in the MathFinders NSF grant, https://gomathfinder.org/ “encouraging students to love math by helping them see it everywhere”.
  • 9 community nature walks were held; they provided AT for NTMN and education for the community.
  • A Second Sunday Spanish Walk was held as a prototype for monthly programs in 2025.

Outreach:

  • Twelve Hills participated in Oak Cliff Earth Day at Lake Cliff Park.
  • Hosted an annual gathering and presentation for the Oak Cliff Gardeners’ Gardens Tour and Plant Swap.

Special Projects:

  • Informational Kiosk
    • A long-awaited project- the creation and installation of an informational kiosk, was realized in June of 2024! The kiosk provides information on the nature center’s history and mission, a map, and information on upcoming events. A public dedication was held June 15.
    • A boulder inscribed with Twelve Hills’ land acknowledgement was installed near the kiosk.
  • A special social media project, the Twelve Days of Twelve Hills was created to educate the public about some of the species at Twelve Hills, the volunteers, and to celebrate 1200 species on iNaturalist.

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September 2, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 3, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
NTMN August Chapter Meeting- Wednesday, September 3rd- Prairies and Pollinator Gardens: Three Stories The committed naturalist wages a daily battle against the tide of urban...
John Bunker Sands Wetland Center || 1st Saturday Walk & Talk Bird Tour (AT) Saturday, September 6, 2025  ||  7:30am – 9:30am   CT Description:  Join...
September 6, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Dogwood Canyon Audubon Center || 1st Saturday Bird Walk   (AT) Saturday, September 6, 2025  || 8:30am – 9:30am   CT Description:  Join us for a morning...
Heard Museum || Guided Trails (AT) Saturday, September 6, 2025  |  9:30am – 10:30am CT Description: Experience the ecology, geology, flora and fauna of the...
LLELA || 1st Saturday Nature Walk (AT) Saturday, September 6, 2025  ||  10am  – 12noon   CT Description:  Animal tracks, deer trails, singing birds, trees with...
LLELA || Harvest Moon Night Hike (AT) Sunday, September 7, 2025  ||  7:30pm  – 9:30pm   CT Description:   Join us for an illuminating evening as we trek...
September 9, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 10, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
September 13, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 13, 2025    
8:00 am - 11:00 am
Event Name: Trail Maintenance Date/Time: Every Second Saturday of the month from 8am to 11am. Except for July and November. Address: 367 Freeport Parkway, Coppell, TX 75019...
Heard Museum || 2nd Saturday Bird Walk (AT) Saturday, September 13, 2025 ||  8am – 9:30am CT Hosted by the Heard & offered by volunteers...
Trinity River Audubon Center || Second Saturday Guided Hike(AT) Saturday, September 13, 2025  |  8:30am –10am   CT Description: Join us for a guided hike led...
September 13, 2025    
9:00 am - 11:00 am
Preservation Society for Spring Creek Forest “2 nd Saturday” workdays Sept. 2025/ May 2026 Sept. 13, 2025, 9-11am: -- 1770 Holford Road (the center section...
Dogwood Canyon Audubon Center || Guided Tree ID Walk   (AT) Sunday, September 14, 2025  || 11am – 12:30am   CT Description:  Join us for a guided...
September 16, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 17, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Heard Museum || 3rd Thursday Bird Walk (AT) Thursday, September 18, 2025 ||  8am – 9:30am CT Description: 3rd Thursday Bird Walks in the Heard...
Event Name: Paschall Park Butterfly Trail Workday (VH) Date/Time: Friday September 19, 2025, 730-10am Address: Paschall Park Butterfly Trail, 1001 New Market Road, Mesquite, 75149...
Trinity River Audubon Center || Morning Bird Walk (AT) Saturday, September 20, 2025  ||  7:30am  – 9am   CT Description: Join us for a monthly bird walk...
Prairie & Timber Audubon Society Field Trip || Birding the Joppa Preserve (AT) Saturday, September 20, 2025  ||  7:30am – 10:30am   CT Topic: Birding the...
Project site name changed to Prairie Creek Marsh and Wildscape (formerly Canyon Creek) Monthly workday 1001 G. Bush Freeway ( Hilton Garden Inn) Every third...
September 20, 2025    
8:00 am - 11:00 am
8th Annual World Cleanup Day Dallas ONE DAY, 211 COUNTRIES, 114 MILLION VOLUNTEERS Join us for the biggest World Cleanup Day ever! Saturday, September 20th...
September 20, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 21, 2025    
12:00 pm - 1:00 pm
Blackland NPAT Speaker Series (AT) Sunday, September 21, 2025    12:00 PM – 1:00 PM The Native Prairies Association of Texas Blackland (Dallas) Chapter invites you...
September 23, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 24, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Paul S Dryer Nature Preserve || Field Trip (AT) Thursday, September 25, 2025 | 10am – 11:30pm    CT Free Description This will be a 2.5...
September 27, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Wings Over the Wetland (2025)  Date/Time: Saturday, September 27, 2025 (Event: 4:30 - 9:00 p.m.; Volunteers: 4:00-9:30 p.m., or e-mail for earlier) Address: 655 Martin Lane, Combine, Texas...
Tandy Hills Prairie Sky/Star Party (FYI) Saturday, September 27, 2025   7:00 PM or after dark The Fort Worth Astronomical Society presents their Saturday star party...
September 30, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
October 1, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Leaf Your Yard Wild: What’s Happening Under Autumn’s Blanket? The Xerces Society spearheaded a social media campaign with the “leave the leaves” slogan. Essentially, they...
Name: Blacklighting at the Brookhaven Pollinator Garden Date and Time: Wednesday, October 1 8:45 p.m. to 11 p.m. (directly after chapter meeting) Location: Brookhaven Windmill Pollinator Garden Map...
John Bunker Sands Wetland Center || 1st Saturday Walk & Talk Bird Tour (AT) Saturday, October 4, 2025  ||  7:30am – 9:30am   CT Description:  Join...
October 4, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Dogwood Canyon Audubon Center || 1st Saturday Bird Walk   (AT) Saturday, October 4, 2025  || 8:30am – 9:30am   CT Description:  Join us for a morning...
The Moon and Nature at Night at Twelve Hills (AT) Saturday, October 4, 2025   7:00 PM – 8:30 PM Take a guided, full-moon walk and...
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07 Sep
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