Yarrow

Achillea millefolium

Also called Milfoil, Nosebleed plant

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.

Learn and gatherIn season now

A feathery-leaved plant with a flat white flower head, found almost everywhere in this territory. Long used on cuts and scrapes. It also has two deadly look-alikes, so read the identification carefully.

Commonly shared knowledge. Learn it, gather it, and follow the protocol.

Take care

  • Some people get a rash from handling yarrow in sunlight. Try a small amount on the skin first.
  • Not taken internally in pregnancy.
  • People allergic to ragweed, daisies or chamomile may react to yarrow.

What it is confused with

  • Deadly look-alikePoison hemlock Conium maculatum

    Poison hemlock has a smooth hairless stem with purple blotches, is hollow between the joints, and grows chest high or taller. Its leaves are divided but glossy and fern-like rather than soft and feathery, and it smells rank and mousy, not sweet. Its flowers sit in umbrella-shaped clusters on branching stalks, not one flat head on one stem.

  • Deadly look-alikeWater hemlock Cicuta maculata

    Water hemlock grows in wet ground, is tall and stout with a purple-streaked hollow stem, and has coarse toothed leaflets with the leaf veins ending in the notches between teeth rather than at the tips. Cut the root and it is chambered with yellow oily sap. It is the most violently poisonous plant on this prairie. If you are in wet ground and unsure, stop.

  • Harmful look-alikeWild caraway and other carrot-family plants

    The whole carrot family carries umbrella-shaped flower clusters on branching stalks. Yarrow does not: its flat head sits on one stem, and its leaves are feathery all the way rather than divided into distinct leaflets.

How to know it

Leaves
Very finely divided, soft and feathery, almost fern-like, and hairy. They feel soft rather than crisp when you rub them.
Smell
Sharp, sweet and unmistakably aromatic when a leaf is crushed. This is the single most useful test.
Flowers
Small white or occasionally pink flowers packed into a flat-topped cluster, sitting on top of a single unbranched stem.
Stem
Solid, slightly ridged, greyish-green and hairy. Not hollow, never purple-blotched.
Height
Ankle to knee high in most places, taller in good ground.

The country it grows in

  • Open prairie
  • Coulee slopes
  • Aspen parkland
  • Roadsides and disturbed ground
  • Foothills and shrubland

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 We do not publish where a patch is, and we are not going to.

When it is ready

  • Leaves May to September
  • Flowers June to SeptemberPick heads that are fully open and still white, not browning.

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

What it is used for

  • Skin and wounds
  • Breathing and colds
  • Teaching with youth

Documented across the plains for cuts, scrapes and nosebleeds, applied to the skin.

Also documented as a tea for colds, though the taste is very bitter.

How it is prepared

  • Poultice

    Fresh leaves are bruised or chewed and laid on a clean minor scrape, then covered.

    For minor scrapes only. Deep wounds, bites, anything dirty, and anything that will not stop bleeding need proper medical care.

  • Dried and stored

    Bundle and hang to dry, then strip the leaf and flower and keep it in a jar.

  • Tea

    A small pinch of dried leaf steeped in hot water. It is strong and bitter.

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.

Yarrow is everywhere, which is exactly why it is a good plant to learn first. Learn it well enough that you could pick it out in the dark, because the plants it resembles will kill you.

Where this came from

  • Hellson, John C. and Morgan Gadd. Ethnobotany of the Blackfoot Indians. National Museums of Canada, Mercury Series Paper 19, 1974.
  • Kershaw, Linda. Edible and Medicinal Plants of the Rockies. Lone Pine Publishing, 2000.
  • Johnson, Derek, Linda Kershaw, Andy MacKinnon and Jim Pojar. Plants of the Western Boreal Forest and Aspen Parkland. Lone Pine Publishing, 1995.
  • Moerman, Daniel E. Native American Ethnobotany. Timber Press, 1998.
Harvest pressure
Common in the right country
How it is approached
Learn and gather
Last updated
2026-07-24
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Yarrow (Achillea millefolium) · Birchbark Health medicine finder · birchbarkhealth.org/medicine-finder/yarrow

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