Foraging Yarrow (Achillea millefolium) Asteraceae

Discover how foraging yarrow connects us with the Neanderthals. Foraging yarrow connects us with our Neanderthal ancestors more than 50,000 years ago

How foraging yarrow today continues an intriguing plant-people relationship stretching back more than 50,000 years!

People have been foraging yarrow for ever! This is unsurprising to us today, given what we know about its many uses, and in a globally connected world we nearly all have access to information on the remarkable powers yarrow shows as a medicine.  As an edible, if somewhat a bitter and aromatic plant, yarrow has been used around the world wherever it has been found. But we have forgotten much about the importance and magic of this ubiquitous herb.

Its too easy to overlook and ignore some of the really common plants when out hunting and gathering wild food. Its easier still not to enquire or ponder about the significance of a common plant that is found in almost all temperate zones around the world.

We repeatedly see a few common plants everywhere we go, and they can immediately just become part of the fabric of the ‘green wall’ because of their seemingly omnipresence . Unless that is we choose to explore, and then their important role in human evolution starts to become apparent.

Yarrow is a herb heavily steeped in myth and legend; and a plant that many cultures of the world have widely used and revered. Achillea millefolium was named in honour of the Greek god Achilles; who according to legend, had course to widely employ this wound staunching herb on the battlefield.

Many tens of thousands of years before, the Neanderthals were foraging yarrow for use as food and for its medicinal properties. This was revealed by the presence of a number of common wild plants found in the plaque on the teeth of Neanderthals excavated from graves in the Mediterranean basin!

We know enough about zoopharmacology, the study of how wild animals use wild medicinal plants, to confidently imagine our more recent Homind ancestors having a reasonably extensive knowledge of the wild plants they lived with and had to utilise to survive.

I think its both lazy and insulting to not recognise that our hunter-gather-foraging ancestors would easily have known hundreds of plants. It is likely that far more of our vast natural larder and medicine cabinet would have been familiar to them, than to the majority of people alive today in the Western world.

Today, as you will soon see, yarrow remains a sovereign remedy of both Western and Eastern herbal medicine traditions, and rightly persists as a favourite of many practitioners working with plant medicines. Alongside dandelions and plantains, yarrow can be considered another of our globally available, herbal first aid plants!

But its not just practical uses of Yarrow that stand this plant out from the crowd. This happens to be the only plant used for the ritual purposes of divination in the Chinese oracle – the ‘I Ching’. This 5,000 year old oracle, still much in use the world over, is traditionally consulted after preparing and throwing 50 Yarrow stalks into the air and then interpreting how and where they landed.

Quite why the ancient Chinese decided upon this herb is unclear.  But its not the only plant  to have has almost reverential status conferred on to it by ancient civilisations in the Orient. A common relative of yarrow, also found here in Britain – mugwort (Artemisia vulgaris), is almost exclusively known as ‘Moxa ‘in Chinese and is the only herb used in the application of moxabustion, where a bundle of the dried herb is burnt and the glowing tips placed just above the skin, to stimulate the movement of chi (energy).

Botanical description to help I/D when foraging yarrow

Yarrow has wispy, feathery foliage, which can superficially resemble the wild carrot. Yarrow’s leaves are repeatedly divided, also known as bi-pinnatifid leaves.

We an use all parts of yarrow as medicine, so foraging yarrow is almost an all year round affair
The feathery foliage of yarrow is noticeable in the summer when it retains its green colour even in drought.

The leaflets are small with thin lobes, which gave rise to its other common names; ‘milfoil’ and ‘thousand leaf’.

The basal leaves are sometimes quite large and sprawling, always on long petioles, and initially grow in a rosette. Leaves are typically around 20-25 cm long. The stem leaves become shorter, sessile, and alternately spaced.

In mild climates you will see the plant happily overwintering. New growth will re-emerge from its creeping and steadily spreading rhizomes in early Spring. This network of roots will mean that we regularly find the plant growing as dense mats and carpets.

Although mostly a white flowering plant, pink flowering forms are not an uncommon sight when foraging yarrow
Pink forms are not an uncommon sight when foraging yarrow in summer

Yarrow can be found in full bloom from June. It has hairy and furrowed flowering stems, typically reaching heights of 60-70 cm. Yarrows inflorescence is often referred to as ‘umbel-like’ in books, and this is because untrained eyes could initially mistake yarrow’s flowering structure for an umbel, and then place yarrow in the carrot family.

However, look closely from below, and you will observe the numerous flower stalks condensed together high up the stem, and you will see how they do not all originate from a central point on the stem, as per umbelliferous plants. The type of inflorescence that yarrow displays is also known as a corymb.

The individual flower heads are composite, and consist of tiny flowers (florets) grouped together on a ‘capitulum’.  Each composite head is singular and terminal. These plant family patterns will be seen on all daisy family plant flower heads, and is easiest to study on a sunflower. Typically a singular yarrow flower head will have 5 or 6 individual florets. Read more on the easy-to-remember plant family patterns method of Plant I/D.

The flowers have a characteristic medicinal-savoury odour. They will taste bitter. Usually, yarrow has creamy white ray-florets, delicately framing the orange-tinted, central disk-florets. But pink flowering strains of yarrow will also frequently be seen.

Habitats to look in when foraging yarrow

Yarrow grows in a range of habitats, throughout Britain and Ireland, except for areas which are permanently waterlogged, or on soils that are strongly acidic (pH < 5.5).

It happily colonises waysides, pastures, grassy places, hedgerows, and waste-ground, in town or country, throughout the land. A lover of temperate climates, you can almost always easily find yarrow in Britain, even at altitudes of up to around 1100 metres. On the coast, look in fields by the dunes and on stabilised shingle. This map from the online flora of Britain and Ireland shows just how much of the country has yarrow.

Yarrow thrives in harsh conditions without losing its fresh look of vitality. This becomes especially noticeable during droughts, when its dark green foliage stands out from brown and withered neighbouring plants, especially in grasslands.

Yarrow loves numerous types of grasslands and flowers from June

 

Parts used: Leaves / flowering tops.

Harvest: Leaves: Spring – when young. Flowers: From July – September, just when opening.

Key medicinal constituents Volatile oil (including cineol, eugenol, thujone, camphor, azulene); bitter principles; tannins; salicylic acid, isovalerianic acid. (Learn more about the common medicinal plant constituents here)

Actions: Anti-inflammatory, anti-septic, diuretic, diaphoretic, astringent, expectorant, vulnerary.

Pharmacology and uses: As an edible, yarrow should be embraced in the kitchen of the adventurous, and by folk looking for foods that double as preventative medicines. So by foraging yarrow you get to kill two birds with one stone!

During spring and early summer, the younger leaves give a lovely, crunchy texture in a mixed salad, while offering slightly bitter, yet subtle and savoury medicinal tones. A strong and intoxicating beer can reportedly be made with yarrow,  for which a number of recipes can be used (watch this space)!

As medicine, yarrow has chiefly been used as a wound herb. The tannins exhibit an astringent effect, on both exterior and interior surfaces of the body.

The volatile oil constituents, such as cineole, have anti septic qualities, while azulene, responsible for the blue colour of the essential oil, not only reduces inflammation, but stimulates the formulation of tissue for wound healing.

When to go foraging yarrow for peak essential oil content

For more information on harvesting wild plants, simply click here.

Couple this with the general astringency, and yarrow can swiftly, and effectively, help seal and heal all manner of cuts and wounds!

Regularly eating or drinking yarrow helps prevent and treat dyspepsia and ulceration – two conditions that alcohol or caffeine, coupled with a rich diet, can help manifest.

Yarrow promotes a sedative activity on the nervous system, and is often employed as an anti-spasmodic for nervous dyspepsia. Yarrow is acclaimed for helping heal and tone the mucus membranes throughout the gastro-intestinal-tract.

Nature’s abundant anti-inflammatory phenol, salicylic acid (aka salicin), can be found in yarrow, just as with meadowsweet (Filipendula sp) or willow (Salix sp). So try foraging yarrow, which is much more abundant than its relative, chamomile.

As a diaphoretic, yarrow will regularly be used for fevers, and also helps with palpitations, painful menstrual periods, and convulsions; as well as being of use as a peripheral vasodilator, diuretic, and mild expectorant.

As with any member of the Asteraceae family, there comes slight risk of possible sensitivity for some individuals, especially those with dermatological problems. As ever, always seek professional advice before using wild plants as medicines.

 

You can read more about UK edible wild plants and fungi that are available to harvest now, in these seasonal wild food guides and the new monthly foraging guides, that started with foraging in January. As well as the edible and medicinal plants, foragers also need to learn the poisonous and toxic plants, which I have briefly summarised here.

If you would like more plant identification help then check out these waterproof, field-guide style, pocket-sized I/D cards. And you need never miss a foraging trick again, with this set of helpful, season-by-season harvest charts, available as a download.

For a deeper understanding of the arts ond crafts of the forager, then take a look through my fun and affordable wild food foraging courses for a course near you. Book a place today!

Happy foraging!

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