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BiodiverseCity St Louis

SAVE THE DATE!

City Nature Challenge 2026 is April 24–27.

 

City Nature Challenge logo
Members of the public and Saint Louis Zoo staff identify a species
Photo by Sundos Schneider

City Nature Challenge 2026 will be
April 24–27!

City Nature Challenge participation is easy:

  • Take photos of plants, animals, insects, and other life forms. You can do this anywhere across the bi-state* region.
  • Upload your images on the greater St. Louis region's iNaturalist page.
  • Download the FREE iNaturalist app. Find instructions for downloading the app on the iNaturalist website or go directly to the app store.

Check out the 2026 iNaturalist project page for more info.  

Sign up for our email list to receive more information.

 

Special City Nature Challenge Local Events

 

Participant photographing organismBioblitz in Forest Park

Forest Park (meet at Pavilion #11 near Kennedy Woods)
Saturday, April 25, 2026; 9–11 a.m.
RSVP

Join us for a guided bioblitz in Forest Park as part of the 2026 City Nature Challenge!

  • Bring your smart phone, a reusable bottle of water, and your enthusiasm for biodiversity!

Questions? Contact Hannah Gibson with Missouri Botanical Garden at hgibson@mobot.org.

 

Species Identification Happy Hour

Urban Chestnut Brewery and Bierhall
4465 Manchester Avenue, St. Louis, MO 66110
Thursday, April 30, 2026; 4:30–6:30 p.m.
RSVP

Join us for a species identification event at Urban Chestnut as part of the annual City Nature Challenge!

  • Bring a laptop and your knowledge of plants, animals, or fungi species to help identify observations made during the City Nature Challenge to research-grade. No experience necessary!
  • RSVP by April 27 so we can get a headcount for food and drink.

Questions? Contact Hannah Gibson with Missouri Botanical Garden at hgibson@mobot.org.

 
The 2026 St. Louis City Nature Challenge is supported by Missouri Department of Conservation.
Missouri Department of Conservation logo