Advanced Minnesota Sedge Identification Workshop (July 2024)

Registration is open for the July 2024 Advanced Minnesota Sedge Identification Workshop.  Please download a workshop announcement, agenda, and registration for more details or contact Jason Husveth with inquiries regarding registration details.  Thank you!

Critical Connections Ecological Services, Inc. is pleased to offer for the first time a three day advanced sedge identification workshop.  The advanced workshop will be taught in July to capitalize on the later season phenology of Carex section Ovales and the other non-Carex genera of the Cyperaceae in Minnesota.  The workshop will be taught in the lab on Wednesday, July 17, and Thursday, July 18, 2024.  On Friday, July 19, we will explore native sedge genera and species in diverse native wetland and upland plant communities of the Anoka Sand Plain.

The advanced identification workshop will be taught by Jason Husveth and will build upon the format and structure of past sedge workshops with two days in the lab and one full day in the field. At the request of past workshop attendees, the advanced workshop will focus on the most difficult group within the genus Carex(Section Ovales; 20 species) as well as taxa within the non-Carex genera of Minnesota (e.g. Cyperus, Scleria, Eleocharis, Dulichium, Eriophorum, Scirpus, Schoenoplectus, Schoenoplectiella). The workshop will once again be taught within a modern plant laboratory at the University of Minnesota’s St. Paul Campus Plant Growth Facility, and in the field at diverse native sites in Anoka and Isanti Counties. The lab curriculum will be taught using live and pressed specimens and our collection of mature perigynia and sedge achenes. Participants will have access to live specimens of dozens of species, dissecting microscopes, hand lenses, metric rulers, and electronic and printed keys.

The advanced workshop will be useful to a wide array of students, including novice and experienced field botanists, wetland ecologists, and wetland professionals with an interest in identifying Minnesota Carex Ovales and non-Carex sedge taxa to species.Those who have attended the Minnesota Sedge Identification Workshop (or similar) in past years and those with a firm knowledge of the genus Carex are encouraged to take the advanced workshop. This course is accredited as 18 direct hours of continuing education units (CEUs) for the MN Board of Soil and Water Resources’ new Minnesota Wetland Professional Certification Program (MWPCP).  A rapid key to the Carex section Ovales of Minnesota (Version 1.1, Husveth 2024) will be provided to all students. We will continue to teach from Welby Smith’s Sedges and Rushes of Minnesota as our primary text and reference (published August 2018).

Participants of the advanced workshop can expect to complete the three day workshop with:

1) An introduction and basic knowledge of all sedge (Cyperaceae) genera occurring in Minnesota  (15 genera as per Welby Smith, 2018),

2) The ability to successfully key and recognize many of the Ovales sedges within the genus Carex, both in the lab and in the field,

3) Knowledge of required specimen collection methods to enable proper Carex and non-Carex sedge identification in the lab (students often make a personal collection of pressed specimens from live material provided at the workshop),

4) Lab and field experience with the non-Carex sedge genera and species within the following genera: Bulboschoenus, Bulbostylis, Cladium, Cyperus, Dulichium, Eleocharis, Eriophorum, Fimbristylis, Rhynchospora, Schoenoplectiella, Schoenoplectus, Scirpus,Scleria, Trichophorum,

5) The ability to use dichotomous keys to correctly key and identify Minnesota sedge genera to species in the lab and field, and,

6) Experience applying two days of laboratory learning and keying in the field within sedge-diverse plant communities and natural areas.

Jason Husveth is a professional ecologist and botanist working throughout Minnesota and the Upper Midwestern United States. Jason has over twenty five years of academic, field, and herbarium experience identifying, collecting, photographing, and documenting sedge species in Minnesota and the Upper Midwest and throughout the Eastern United States. Jason has been trained in sedge identification by Dr. Anton Reznicek (Flora of North America: Cyperaceae and Michigan Flora), Dr. Robert H. Mohlenbrock (Illustrated Flora of Illinois),  Dr. Susan Galatowitsch (Graduate Advisor, University of Minnesota), and Dr. William Norris and Scott Zager (Sedges of Iowa). Jason has taught sedge identification courses in the field and in lab settings, and has lead dozens of plant identification field trips to native wetland and upland habitats throughout Minnesota. Jason not only knows and loves sedges; he knows how to teach others to navigate through sedge diversity to understand the underlying concepts on how to identify, learn, and remember sedge species of Minnesota’s diverse native habitats.

Please look for additional plant identification workshops that we plan to offer in the future, including the Rubus of Minnesota (Bunker Hills Regional Park, August 2024).  Announcements for additional workshops will be released Spring 2024.



Advanced Sedges of Minnesota
Three Day Identification Workshop


Lab:   Wednesday, July 17, Thursday, July 18  Field: Friday, June 19, 2024


Jason Husveth, Botanist/Ecologist


$700 per Student / Limit 22 Students      

As of March 1, 2024, registration for the July 2024 Advanced Minnesota Sedge Identification Workshop is open. 

Registration typically has filled by March 31 of each year for mid June workshops. Please feel free to email Jason Husveth with questions or to arrange for registration while your payment is being processed with your employer or agency. Registration is confirmed upon receipt of full payment or purchase order.

If you cannot afford the registration fee, please contact Jason Husveth to discuss what might be possible. Thank you.


Location (Lab)

University of Minnesota
St. Paul Campus
Plant Growth Facilities West
Lab 136
St. Paul, MN 55108


Location (Field)

We will enjoy an entire day in the field (Friday, July 19) within sedge diverse native plant communities of wetlands and uplands of northern Anoka and southern Isanti Counties.  Field site locations to be determined and will be communicated to registrants in advance of the workshop. 


To Register

Please download a registration form and course announcement or contact Jason Husveth at for more information and a registration form.  This course is accredited as 18 hours of continuing education credit towards BWSR’s Minnesota Wetland Professional Certification Program.