Three Rivers' Natural Resources Management

Three Rivers' Natural Resources Management Dedicated to preserving native plant communities, wildlife diversity and water quality.

Our policy for the planning and management of natural resources distinguishes us from other park and recreation agencies in Minnesota. Specifically, our policy allows no more than 20 percent of a park reserve to be developed for active use and requires that at least 80 percent of the park reserve be restored to and retained in a natural state. In keeping with this policy, we are actively involved in the preservation and restoration of wildlife and plant species.

08/25/2026

Crackling prairie fire ASMR

Prescribed fire is an important tool utilized to maintain open prairie, recycling nutrients, remove unwanted woody species, and lower built up thatch.

New to our team is trying out pyro diversity. If units are always burned the same time of year, certain grass and forb species become favored. With younger restored units that are battling woody invasion or monocultures of Canada Goldenrod, our hope is that a late summer burn will assist in creating more diversity and resiliency.

Parks remain open during prescribed fire and are under the close direction of trained professionals.

Nursery staff is in the thick of seed collecting as all the fruits are ripening in fast succession. Right now, our main ...
08/21/2026

Nursery staff is in the thick of seed collecting as all the fruits are ripening in fast succession.

Right now, our main targets are the dogwoods. Dogwoods are an excellent habitat plant, supporting many kinds of pollinators and their larvae. They also supply birds, bears and deer with their high fat fruits (drupes) with a late season meal. And, of course, the sticks, branches and leaves provide all kinds of critters with shelter and nesting habitat. If you are looking to add some shrubs to a planting near you, cornus is a good bet! With that said, let's highlight one of our lesser known native dogwood species.

This is Cornus amomum, or the silky dogwood. It can be easily confused with its showier and better known relative, the red-twig dogwood (Cornus sericea). These two can be hard to distinguish from one another at first glance, but red-twig, as the name suggests, has a brighter red bark, while silky is more maroon with grey speckles.

They occupy similar wet habitats, and their ranges overlap here in MN, but silky has the more southern range of the two. Silky can also take slightly more shade but still prefers full sun.

Though they can look very similar and share the same habitats, right now is the best time of the year to tell them apart. The berries of red-twig are a bright white, while the berries of the silky range from a beautiful sky blue to deep navy blue. The blues make the silky dogwood a particularly beautiful shrub in late summer and a great addition to any native planting.

The friends you run into at stream side water quality monitoring sites! 🦋
07/30/2026

The friends you run into at stream side water quality monitoring sites! 🦋

Did you get a little behind on your weeding with the heat and air quality? Us too...us too. Using this quick break in te...
07/28/2026

Did you get a little behind on your weeding with the heat and air quality? Us too...us too. Using this quick break in temps to claw our way back to normal!

Our District Nursery is a 55-acre plant materials nursery at Crow Hassan, which produces native perennials, trees, and shrubs.

**NEST UPDATE**Remember that nest with the snake skin?!  Here are the hatchlings looking ready to bust out and spread th...
07/10/2026

**NEST UPDATE**

Remember that nest with the snake skin?! Here are the hatchlings looking ready to bust out and spread their wings soon for first flights.

You can even see that staple mohawk appearance where they get their namesake of Great Crested Flycatcher. The yellow feathers are easy to see up close at this age.

An aerial insectivore that also gleans insects from foliage and dives after prey items on the ground.

Hope they get to flying soon to beat this upcoming heat!

🦟🚁French Regional Park will have low helicopter activity for treatments from Metropolitan Mosquito Control District toda...
06/25/2026

🦟🚁French Regional Park will have low helicopter activity for treatments from Metropolitan Mosquito Control District today June 25th after the recent rains.

To learn more check out an episode from The Wandering Naturalist Podcast: https://thewanderingnaturalist.libsyn.com/episode-143-minnesotas-other-state-bird-mosquito-control-district

There will also be drone activity at Sochacki Regional Park treating two "swamp" areas.

City of Robbinsdale, MN - Government
City of Plymouth, MN - Local Government

Nancy Read from the Metropolitan Mosquito Control District explains what the Metropolitan Mosquito Control District is, how it evaluates when and where mosquitos need to be controlled, and what methods they use. 

Address

12615 County Road 9
Plymouth, MN
55441

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