What Happens To Collected Prairie Seeds?

By: Erin Korsmo

August 22, 2018

Category: Resource Management

Earlier this week, we posted about prairie seed collection and the role it plays in restoring native prairies. If you’ve participated in a seed collection event – or even if you haven’t – you may have wondered what exactly happens to the seeds after they’re collected from the prairie.

Getting the seeds back out onto the prairie is not as simple as you might think. Here's what happens between seed collection and seed planting.

1. Volunteers collect seeds from the prairies under the supervision of Three Rivers staff.

a close-up image of seeds in person's hand.
Photo by Erin Korsmo.

2. Staff take the seeds to the Park District nursery in Crow-Hassan Park Reserve and lay them out to dry.

Seeds are sorted into boxes and dried at the Crow-Hassan nursery.
Photo courtesy of Angela Grill, Three Rivers Wildlife Biologist.

3. Seeds are sorted by species and cleaned. Cleaning methods depend on the seed. Stems must be removed. Some seeds are brushed and extracted from the flower head.

4. Seeds are weighed, bagged and logged.

5. Staff decide what mixture of seeds should be planted in which prairie unit. This is based on which plants are thriving and which need some help.

6. The seeds are put into cold storage. This allows them to go through the stratification process that would occur naturally in the winter. It also keeps them safe from hungry rodents.

7. In the spring, the seeds are mixed by hand using shovels.

8. The seed mixtures are rebagged and labeled for the prairie unit where they will be planted. Each Three Rivers prairie is divided into several units.

9. The seeds are sown after the prairies have been burned by staff. The seeds are combined with sand and put into a sander on the back of a truck. On a lightly rainy day, staff "sand" the prairie by driving over it in a random fashion. This keeps the plants from growing in rows. Mixing the seeds with sand and sowing on a rainy day helps anchor the seeds to the soil so they don't float away.

park district employee burning a prairie.
Three Rivers staff conduct a controlled burn at Crow-Hassan Park Reserve.

10. Some rare plants are seeded by hand.

11. The seeds germinate and grow throughout the season. 

close-up image of yellow flowers with brown centers.
Photo by Erin Korsmo.

Join an Upcoming Seed Collecting Event

Want to be part of the prairie restoration process? Learn more about how to join a seed collecting event.

About the Author

A woman in a black jacket smiles.

Erin Korsmo is the Web Coordinator at Three Rivers Park District. Her background is in journalism and content strategy. Erin has a longstanding passion for the outdoors. As a child, she went camping every summer and volunteered to count loons for the DNR with her family. Erin is a Minnesota Master Naturalist in the deciduous forest and prairie biomes. Outside of work, she enjoys hiking, kayaking, identifying and photographing plants and wildlife, crafting, and spending time with her husband and cat.


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