Prairie turnip

Pediomelum esculentum

Also called Breadroot, Timpsila

We do not have a Blackfoot or Cree name for this one yet. Tell us the name and we will add it, with your word on where it comes from.

Ask firstIn season nowTake care, harvest lightly

A starchy prairie root that was a staple food across the plains, dug in early summer, peeled, braided by its own tails and hung to dry for winter.

Speak with someone who knows this plant before you harvest it.

Take care

  • Only dig pea-family roots you can positively identify. Several relatives on this prairie are poisonous.

What it is confused with

  • Harmful look-alikeLocoweed and milkvetch Oxytropis and Astragalus species

    These have many small paired leaflets along a stalk rather than five leaflets spreading from one point, and no edible tuber.

  • Easily confusedSilverleaf scurfpea Pediomelum argophyllum

    Silvery all over, more branched, and has no edible swollen root.

How to know it

Leaves
Five leaflets spreading from one point like a hand, hairy, greyish-green.
Stem
Densely hairy, standing about a hand-and-a-half high.
Flowers
A dense spike of blue to purple pea flowers in early summer.
Root
A swollen tuber a few inches down, brown-skinned and white-fleshed inside.
Timing
The top breaks off and blows away by midsummer, so it can only be found while it is still standing.

The country it grows in

  • Open prairie
  • Coulee slopes

Landscape types only. We do not publish where a patch is, and we are not going to.

When it is ready

  • Roots June to JulyWhile the plant is still standing and flowering. Once the top blows off you will not find it.

Right now it is July. Something on this plant is in season.

What it is used for

  • Food and drink
  • Teaching with youth

A staple food across the plains, eaten fresh, dried whole, or pounded into flour.

Dried roots were braided together by their own root tails into long strings and hung for the winter.

How it is prepared

  • Food

    Peeled and eaten raw, roasted, or boiled into stew.

  • Dried and stored

    Peeled, braided and hung to dry. Keeps for years.

Protocol

Ask the plant first, and offer something before you take anything. Tobacco is what is most often offered here. Say who you are, and say what the medicine is for.

Harvest the mature plants and leave the small ones to grow. Never take the first plant you find, and never take all of them.

Take only what you will actually use. Medicine picked and then left to rot in a bag was taken for nothing.

Leave the ground as you found it. Put back any dirt you dug up, and return any plant material you do not use to the earth.

Do not gather beside roads, highways or trails, where the plants take up whatever has been sprayed or spilled there.

If you are not certain what a plant is, do not pick it and do not put it in your mouth. Ask someone. Being wrong in the field is how people get hurt.

Native prairie is scarce now, and so is this plant. Dig only in a large healthy stand, take few, and fill the hole.

Where this came from

  • Kershaw, Linda. Edible and Medicinal Plants of the Rockies. Lone Pine Publishing, 2000.
  • Moerman, Daniel E. Native American Ethnobotany. Timber Press, 1998.
  • Vance, F.R., J.R. Jowsey, J.S. McLean and F.A. Switzer. Wildflowers Across the Prairies. Greystone Books, 1999.
Harvest pressure
Take care, harvest lightly
How it is approached
Ask first
Last updated
2026-07-24
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Prairie turnip (Pediomelum esculentum) · Birchbark Health medicine finder · birchbarkhealth.org/medicine-finder/prairie-turnip

Written from the published sources listed on this sheet. Last updated 2026-07-24. Corrections are welcome and wanted.

Not medical advice. Never eat, drink or apply a plant you cannot identify with certainty. Poison and Drug Information Service 1-800-332-5678. Emergencies 911.

Something wrong on this sheet? Phone 403-894-2808 or write to us at birchbarkhealth.org/contact