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    Home » Edible Wild Plants

    Foraging and Cooking Wapato, The Katniss Plant

    Published: Oct 28, 2023 Modified: Jan 2, 2024 Author: Alan Bergo

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    Wapato (Sagittaria latifolia) is my favorite aquatic plant to forage and an important Native American traditional food. Some people will know it as the real plant Katniss Everdeen is named after in the Hunger Games movies, but the history and use of this edible aquatic tuber is more exciting than anything you'll get from reading the book or watching a movie. Read on and I'll explain what I've learned since I harvested my first tuber 8 years ago.

    Katniss potatoes, wapato, or duck potatoes in different colors.
    Tubers of the plant called katniss come in different colors.

    What is Katniss / Wapato ?

    These are aquatic plants that form underground tubers or storage organs (technically called a turion) like a potato. A native plant of North America, it's found nearly coast to coast. Besides humans, the tubers are eaten by wildlife, especially ducks.

    The plant has many names, a few are below:

    • Psincinca
    • Arrowhead
    • Duck Potato
    • Tule Potato
    • Wapato Potato
    • Rat Potato
    • Swamp Potato
    • Swan Potato

    It's well known as a traditional Native American food, and I've been lucky enough to be invited to harvest them with my friend Linda Black Elk and the Prairie Island Indian Community.

    Different forms of related plants like Sagittaria sagittifolia and S. trifolia are cultivated in China and East Asian countries where they have a long history of use.

    They're known as "慈菇 / Chi Gu", translating to benevolent mushroom in Chinese. They're occasionally sold in the United States as "arrowhead tubers" for Chinese New Year celebrations, but are extremely hard to source.

    A bowl of fresh wapato vegetables or katniss tubers.
    They're also known as arrowhead / duck potato.

    Identification

    Katniss is a perennial aquatic plant that sprouts tubers underneath the above ground portion. The basal leaves have lobes that are always pointed, and are known for having a highly variable shape.

    Broadleaf arrowhead leaf of the katniss plant growing in a pond in the summer (Sagittaria latifolia).
    The tell-tale arrow shaped leaves.
    A young wapato or katniss plant shoot on a wooden background.
    The young flower spikes are edible but not worth harvesting in my opinion.
    Wapato or katniss flowers growing in the summer.
    Flowers of S. latifolia appear in Summer after the shoots.

    Besides the broadleaf arrowhead there's also s. rigida I haven't harvested. It has smaller leaves that lack lobes, and makes smaller tubers. All species in the genus are edible, according to Sam Thayer.

    A hand holding fresh arrowhead tubers or katniss potatoes.
    I've seen tubers vary in color from purple, cream or blue.

    Katniss plants grow near river edges, ditches, marshes, ponds, and lakeshores and prefer clay-mud soil with fluctuating water levels, as pictured below.

    Harvesting wapato or katniss plants on a riverbank.
    Our group harvesting on a riverbank.

    Harvesting

    Wapato tubers are dug in the fall, typically during October. It's easier to find places to dig if the plants are still standing.

    Digging katniss roots or duck potatoes by hand.

    If the wapato plants are no longer visible, you'll need to look for where the stems used to connect to the ground, as pictured below.

    Removing leaves from the mud to reveal katniss plant stems that have died back.
    Old plant stems. You will dig up the entire area that's uncovered to find the wapato potatoes.

    When you find an area where plants are or used to be, you'll dig a roughly 1 foot by 1 foot hole. The "tuber layer" is generally 8 inches or so below the ground. Next you'll hollow out the sides of the hole, focusing on the tuber layer. I've seen Sam Thayer picked 20 -30 tubers out of one hole. Watch the video to see it in real time.

    A small wapato potato visible in a hole of clay, mud and water showing the location of the tuber layer for harvesting.
    The "tuber layer" is roughly 8 inches or so beneath the surface.
    Harvesting a duck potato or wapato from the mud by hand.
    Remove the tubers by hand.

    After you've harvested some tubers, put any tubers smaller than a new potato back to grow, and refill the hole with dirt, then dig another hole.

    In areas of standing water, you can use your bare feet to find the tubers, which will float to the top. I've also used waders and a potato fork. You'll also want to watch for leeches.

    Cleaning

    Rinse the tubers in water to clean off the mud. After cleaning they can be stored in a refrigerator in a zip top bag wrapped in a towel for a couple weeks.

    Washing a bin full of freshly dug wapato tubers in the yard.
    Wash the tubers to remove clinging mud.

    After the tubers are cleaned the top and bottom are removed and the vegetables are peeled individually. I like to do this while I watch a show or listen to a podcast.

    Peeling katniss potatoes with a Kuhn Rikon peeler.
    Peeling wapato vegetables. I recommend Kuhn Rikon peelers for everything. Get the 3 pack and thank me later.

    Cooking

    You can use the tubers anywhere you'd use potatoes. They can be baked, fried or boiled, and are excellent in soups, especially those with meat. I walk through a number of recipes in the video at the bottom of this post.

    Wapato cooked in duck fat, with a crispy duck breast in a Kehoe carbon steel pan.
    Wapato tubers cooked in duck fat.

    Fresh cut tubers have a slight aroma of grapefruit, and a taste reminiscent of potatoes and sweet corn, with a pleasing bitter note. Here's a few ways I like to cook them.

    Wild Rice Soup with Mushrooms and Wapato

    A rich soup made with ingredients of the Upper Midwest. Wapato, wild rice, duck confit and dried morels. You can put the tubers in just about anything though. See the recipe here.

    Duck soup with wapato, wild rice and dried morels (20)

    Wapato hashbrowns

    Grate the wapato tubers and season with a pinch of salt and pepper. Form into 2-4 oz cakes and fry in fat until golden. Serve with a sprinkle of crunchy salt, chives, bacon, eggs and hot sauce.

    Grating katniss potatoes on a microplane grater.
    The tubers can be grated like a potato.
    Grated wapato hashbrowns with chives, guanciale, and a fried egg.
    With guanciale, chives, ramp salt, and a fried egg.

    Pan Roasted Wapato

    Pan roasting is the simplest recipe I know. Cut the tubers in half, cook them cut-side down in a pan for a few minutes, then put the pan in a 350 F oven until just tender. Put back on high heat for a few minutes until golden brown and finish with chopped herbs, shallots, salt and pepper.

    A pan of fried katniss potatoes with shallots and herbs.
    Add your favorite herbs to the crispy fried tubers.

    Drying Wapato

    A traditional way to preserve the tubers is to dehydrate them.

    Slicing wapato potatoes with a mandoline slicer
    Slice the tubers on a mandoline or with a knife.
    Laying sliced katniss potatoes on a dehydrating tray.
    Lay the tubers on a tray and put in the dehydrator.

    After drying they can be ground to a flour, which is slightly bitter but not insurmountable, especially if you eat dandelions. I also like to dice them and dry for soup chunks.

    A bowl of katniss flour, dried wapato tubers, and duck potato flour.
    Top: wapato flour, sliced dried tubers, diced tubers for soup.

    Sam Thayer removes bitterness from the tubers by boiling, mashing, and drying. After drying he mentioned making them into a breakfast porridge/cereal, and it's wonderful. I'll definitely be trying his boiling and drying method next year.

    To make katniss oatmeal, mix ¼ cup tuber flour with 1.5 cups water and cook as for oatmeal. Serve with maple syrup

    A bowl of wapato flour or katniss oatmeal with wild blueberries, raspberries, and black walnuts.
    A very special breakfast with wild blueberries, raspberries, maple syrup or mugolio, black walnuts and a pinch of cinnamon.

    More Wild Tubers

    Timspila / Prairie Turnips

    Bapa Wohanpi (Dried Venison Soup with Timpsila)

    Hopniss/American Ground Nut

    « Foraging Elm Oyster Mushrooms (Hypsizygus ulmarius)
    Chicken of the Woods Pasta with Lemon and Pecorino »

    Reader Interactions

    Comments

    1. Ashley

      April 24, 2025 at 2:06 am

      Can we find them in any stores ?

      Reply
      • Alan Bergo

        April 25, 2025 at 12:40 pm

        Very rarely stores on the east and west coast (particularly San Francisco) may bring them in for the Chinese new year.

        Reply
    2. Jonah

      December 04, 2023 at 5:32 am

      5 stars
      Thanks for sharing all of this, I think I have some in the pond on my property. Wish I could send a picture.

      Reply
    3. Denton Bragg

      October 28, 2023 at 6:17 am

      Just in time for when I scrape out my wapatos. I have a seep behind my house that runs at a right angle from the flow. Sagitarria grows thick here, along with cattail, blue flag, and Equisetum. I try to clean out the muck once a year with a hoe and rake, just to keep the water from stagnating. In my case I don't have to dig so deep as the soil/muck on either side of the narrow channel is thick with the wapatos. They get loose in the slight current and I have to catch them before they get into the branch below (many do and are now thriving at a new location below my property. Mine don't get quite as large as the one in your picture but they're easy enough to clean and cook. Thank you for the great recipes you've provided!

      Reply
      • Alan Bergo

        October 28, 2023 at 8:26 am

        Hey Denton, thanks for commenting. That reminds me I need to check on my blue flag today.

        Reply
      • amanda c

        August 23, 2024 at 5:21 pm

        this must be also how potato patches formed down the banks of the rivers
        from ones gotten loose in the current
        the patch i know of is a pond… no current but i wonder if they’ll float?

        Reply
        • Alan Bergo

          August 23, 2024 at 5:22 pm

          Yes they float. When I’m not digging them I’ll use a potato fork and root around in the muck. They pop right up and it’s a snap.

          Reply

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