a line of people walking through tall vegetation toward a large oak tree with outspread branches.

Photo Credit © Retzer Nature Center

Retzer Nature Center


Training Dates

July 15 - July 20, 2024


Retzer Nature Center

S14W28167 Madison Street

Waukesha, WI 53188



Janet Barthel

Chris Kavalauskas

Julia Robson


Waukesha County Parks and Friends of Retzer Nature Center are hosting a week-long Master Naturalist Volunteer Training at Retzer Nature Center, a 480-acre County Park located in the heart of Waukesha County. Join us from July 15-20, 2024, for an exploration of the prairies, forests, waters, wildlife, and geology of Southeast Wisconsin. The training will include limited classroom time at Retzer Nature Center and local field experiences incorporated into each day throughout Waukesha County (i.e. Lapham Peak, Fox River Park, Pewaukee Lake, just to name a few).

The Wisconsin Master Naturalist program is a network of well-informed volunteers dedicated to conservation service, leadership, and lifelong learning. The Master Naturalist training provides 40 hours of education in a variety of natural history topics and Master Naturalist service areas. Through expert-led trainings, Master Naturalists are equipped to address challenges facing the state by making positive impacts through stewardship, citizen science, and educational activities. Trainings have an emphasis on outdoor field experiences with some classroom instruction and are taught by professional natural resources educators and scientists. Once trained, Wisconsin Master Naturalists record 40 hours of service and 8 hours of advanced training each year to maintain certification and receive a recognition pin.


Monday, July 15th: 9:00 am - 5:00 pm

Tuesday, July 16th: 9:00 am - 5:00 pm

Wednesday, July 17th: 9:00 am - 5:00 pm

Thursday, July 18th: 9:00 am - 5:00 pm

Friday, July 19th: 9:00 am - 5:00 pm

Saturday, July 20th: 9:00 am - 1:00 pm

Class Size



To be a certified Master Naturalist, you will be required to:

  • Attend regularly. Only four hours of training may be missed.
  • Be 18 years old or older.
  • Travel in personal vehicles as necessary to reach different learning sites throughout the training, unless transportation is provided by the host.
  • Complete a small training project.

** Master Naturalist Trainings are primarily outdoor learning experiences which may include extended periods of standing, hiking on both flat paths and off-trails with inclines, and a variety of weather conditions. If you have questions about the activity level of the training, please contact the program office info@wimasternaturalist.org prior to registering.

Financial Hardship

The Wisconsin Master Naturalist program believes that finances should not be a barrier to learning. Reduced registration fees are available for those who indicate the fee is a hardship. Reduced fees will be available during the registration process at a self-selected rate of either $200, $150, or $100. Our hope is that by participating in the Master Naturalist program you are able to give back your time to organizations that need your help. And if your financial situation changes in the future that you’ll consider a donation back to our program.


Registration fee


Registration fee includes all training materials and a 2025 membership with the Natural Resources Foundation of Wisconsin. Food and lodging not included unless otherwise stated.

*Reduced fee information below.

Registration is closed.

Cancellation Policy:

All cancellations after registration are subject to a $25 administrative processing fee. No refunds will be given less than 10 days prior to the start date of the training. If a training is cancelled due to low enrollment, all registrants will be notified and will receive a full refund.



(608) 262-0020