Making a yarrow tincture is straightforward: fill a jar with fresh or dried yarrow, cover it with alcohol, and let it steep for four to six weeks. The result is a concentrated liquid extract that captures yarrow’s astringent and anti-inflammatory compounds in a form that stays potent for years. Here’s how to do it right, from choosing your plant material to bottling the finished product.
Choosing Fresh vs. Dried Yarrow
Both fresh and dried yarrow work well for tinctures, but the ratios differ. Fresh plant material contains water, so you need more of it to get the same concentration of active compounds. Dried yarrow is more concentrated by weight and also absorbs liquid as it sits, expanding inside the jar over time.
Use both the flowers and the leaves. The flowers are rich in volatile oils, which give yarrow much of its medicinal activity, while the leaves contribute astringent compounds. Harvesting the entire above-ground portion of the plant during peak bloom (typically mid-summer) gives you the broadest range of beneficial constituents.
What You’ll Need
- Yarrow herb: Fresh or dried flowers and leaves
- Alcohol: 120-proof (60%) vodka or grain alcohol
- A clean glass jar: A pint or quart mason jar works well
- Cheesecloth or fine mesh strainer
- Dark glass dropper bottles for storing the finished tincture
The alcohol percentage matters. Yarrow extracts well at 60% alcohol, which is strong enough to pull out its key compounds, including flavonoids like quercetin and apigenin, phenolic acids, and the volatile oils that give yarrow its distinctive smell. Higher-proof alcohol (above 75%) is better for resinous herbs but isn’t necessary here and can actually be less effective at extracting water-soluble compounds like yarrow’s astringent tannins.
If you can’t find 120-proof spirits, 80-proof (40%) vodka will still produce a usable tincture, just a somewhat less potent one. You can also blend high-proof grain alcohol with a lower-proof vodka to hit the 60% mark.
Step-by-Step Process
Start by preparing your plant material. If using fresh yarrow, roughly chop or grind the leaves and flowers. More exposed surface area means better extraction. Fill your mason jar about halfway with the chopped fresh herb. Don’t pack it down tightly; you want the alcohol to flow freely around the plant material.
If using dried yarrow, fill the jar only one-third of the way. Dried material is significantly more concentrated than fresh, and it will swell as it absorbs liquid over the coming weeks. Overfilling the jar leads to plant matter rising above the alcohol line, which can cause mold.
Pour your alcohol over the yarrow until it covers the plant material by at least an inch. Seal the jar tightly with a lid. Give it a good shake, then label it with the date and contents.
Place the jar in a cool, dark location, such as a cupboard or pantry. Let it macerate for four to six weeks, shaking the jar every few days to redistribute the plant material and improve extraction. Check occasionally to make sure the yarrow stays fully submerged. If any plant matter pokes above the alcohol, press it down or add more liquid.
Straining and Storing
After four to six weeks, strain the tincture through cheesecloth or a fine mesh strainer into a clean bowl. Squeeze the plant material to extract as much liquid as possible, then discard the spent herb. Pour the finished tincture into dark glass dropper bottles using a small funnel. Amber or cobalt bottles protect the extract from light degradation.
Properly made alcohol tinctures with at least 20% alcohol content have a shelf life of at least one year, and in practice, high-proof tinctures often remain stable for three to five years when stored in a cool, dark place. That said, some active compounds can begin to degrade after three to six months at room temperature. Keeping your bottles in a cool cabinet rather than on a sunny windowsill makes a real difference in long-term potency.
Typical Usage
Yarrow tincture is traditionally taken in small amounts, typically 20 to 40 drops diluted in a small glass of water. Traditional herbalism suggests up to about 4.5 grams of yarrow herb per day as a general guideline, though no clinical studies have established a precise effective dose. Starting with a lower amount and adjusting based on your response is a sensible approach.
The tincture can also be used externally. Applied to a cotton pad, it works as a topical astringent for minor cuts and scrapes, which is one of yarrow’s oldest and most well-documented traditional uses.
Safety Considerations
Yarrow belongs to the Asteraceae (daisy) family, and its pollen is highly allergenic. If you have known allergies to ragweed, chrysanthemums, or other plants in this family, yarrow tincture may trigger a reaction.
Yarrow has blood-thinning properties, so it should not be combined with antiplatelet or anticoagulant medications, including aspirin, ibuprofen, naproxen, or prescription blood thinners. It can also interact with blood pressure medications and sedatives. Pregnant and breastfeeding women should avoid yarrow entirely, as it has a long history of use as a uterine stimulant.
Identifying Yarrow Safely
If you’re wildcrafting rather than buying dried herb from a supplier, correct identification is critical. Yarrow has a toxic lookalike in poison hemlock, and confusing the two can be fatal. Fortunately, the differences are easy to spot once you know what to look for.
Yarrow’s leaves are frilly, thin, and fern-like, almost feathery in appearance. Poison hemlock has broader, flatter leaves shaped more like parsley. The stems tell an even clearer story: yarrow stems are green, slightly fuzzy, and grooved, while hemlock stems are smooth, hairless, and often marked with distinctive purplish-red splotches. Size is another reliable indicator. Yarrow tops out at two to three feet tall, while mature poison hemlock can reach five to ten feet.
The flowers differ as well. Yarrow produces tight clusters of small white (or sometimes pink) blossoms in a flat-topped arrangement that isn’t a true umbel. Hemlock flowers form classic umbrella-shaped umbel clusters. When in doubt, crush a yarrow leaf between your fingers. It has a distinctive peppery, herbaceous scent. If you aren’t 100% confident in your identification, buy dried yarrow from a reputable herb supplier instead.