Stories in Minnesota

June Nature Notes

It’s a great time to see some of Minnesota’s most unusual and colorful plants.

Showy lady's slipper.
Showy lady's slipper Minnesota's state flower, the showy lady’s slipper, blooms in June. © Bill Johnson

June is a good month to see some of Minnesota’s most unusual and colorful plants. Minnesota’s state flower, the showy lady’s-slipper, blooms in June. It is one of Minnesota’s many orchids and the largest of the state’s moccasin flowers.

Moccasin flowers are so-named due to the shape of their blossom that resembles a moccasin or “lady’s slipper.” There are six types of lady’s slippers in Minnesota, and they are probably the best known of the 49 orchids found in the state. The slipper is the lowermost petal of the flower, enlarged in all orchids to form what is called a “lip” so large in moccasin flowers that it literally resembles a ballet slipper.

White lady's slipper.
White lady's slipper Orchids like the white lady's slipper prefer damp environments. In fact, most of Minnesota’s orchids grow in wetlands and peatlands in the northern part of the state. © Dale Rehder
Showy lady's slipper.
Showy Lady's Slippers Showy Lady's Slippers in bloom at Wallace C. Dayton Conservation and Wildlife Area in northwestern Minnesota. © Jon Eerkes/TNC

This odd structure is a trap – it attracts insects, usually bees, that enter an opening at its outermost end and are unable to exit except at the flower’s other end. An insect’s travel through the slipper’s interior brings it first against the stigma, where it deposits any pollen it is carrying from another orchid and then under the anther, where it picks up sticky pollen to bring to the next flower. In this way, the lady’s slipper’s tiny seeds are started and eventually dispersed by the wind.

The showy lady’s slipper is well-named, as a big plant can be more than three feet tall and clusters of plants growing together can display dozens of bright pink and white moccasin flowers. Big plants are old plants: it can be three to four years before the first leaves from a germinating orchid seed emerge above ground and possibly as many as 16 years before an orchid first flowers. Other moccasin flowers are the “stemless” or pink lady’s slipper often found in woodlands in June, the greater yellow lady’s slipper that is perhaps the state’s most common moccasin flower, and the small white lady’s slipper that flowers in late May into June and grows in damp prairies.

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Orchids like it damp. Most of Minnesota’s orchids grow in wetlands, and the peatlands of northern Minnesota are among the best habitats for finding orchids. Peatlands are a type of wetland where slowly moving water containing little oxygen (and is often acidic) prevents the decay of plant matter which instead accumulates as peat soil. These boggy settings are widespread in boreal forests, and Minnesota has more peatland, at an estimated at six million acres, than any other state in the Lower 48.

There are many peatlands to visit in Minnesota. The largest are north and east of Upper and Lower Red Lakes in northwestern Minnesota: this is a wild area and anyone exploring on foot must take care not to get lost in these vast wetlands with few landmarks. Red Lake Peatland Scientific and Natural Area is one of these immense wetlands; a more accessible destination is nearby Big Bog State Recreation Area where a mile-long boardwalk lets visitors see bog plants without getting their feet wet (insect repellent is recommended). Further north, drivers can see orchids along the roadside by traveling the “Lady-Slipper Route” on Highway 11 between the towns of Badger and Roseau. Highway 310 north from Roseau to Canada is also a good route for seeing Minnesota’s state flower from late June through early July.