Foraging and Wild Food
Many of the plants growing in meadows, roadsides, and woodland edges have been used in household remedies for centuries. This page teaches you to recognize them, understand their traditions, and respect the line between botanical knowledge and medical advice.
What this page does and does not do
Roughly one in four modern medicines originated from compounds first found in plants. Aspirin derives from willow bark. The cardiac drug digoxin comes from foxglove. Artemisinin, a critical anti-malarial, was isolated from sweet wormwood. Understanding which plants have historically been used for health purposes is part of botanical literacy and part of understanding how the landscape around you was used by previous generations.
This page teaches you to recognize those plants in the field and to understand the traditions behind their historical use. It does not prescribe doses, recommend treatments, or suggest that any plant can replace medical care. The distance between "this plant was traditionally used as a tea for fever" and "drink this tea instead of seeing a doctor" is the distance between knowledge and danger.
This page assumes you have read Foraging Safety and Identification. The positive-ID rule applies to these plants the same as any other. For the systematic identification process, see Wild Edible Plant Identification.
This page teaches
This page does not
Safety gate
The perception that herbal products are inherently safe because they are "natural" is widespread and incorrect. Research has demonstrated that herbal products carry the same risks as other pharmacologically active compounds, including drug interactions, direct toxicities, and in the case of supplements, contamination with undeclared ingredients.[1]
Herb-drug interactions are real. St. John's wort, widely available and commonly self-prescribed for mood, is a potent inducer of liver enzymes that can reduce the effectiveness of antidepressants, blood thinners, oral contraceptives, immunosuppressants, and HIV medications.[2] Other common herbs including goldenseal, green tea extract, and ginkgo also have documented interactions with prescription medications.
Supplements are not pre-market tested. Under current U.S. law, dietary supplement manufacturers are not required to prove their products are safe or effective before selling them. The burden of proving a product unsafe falls on the FDA, not the manufacturer.[3]
Before using any herbal product, whether foraged or purchased, discuss it with your healthcare provider. This is especially important if you take any prescription medication, are pregnant or nursing, or have a chronic health condition.
Plants worth recognizing
These plants grow wild across much of North America and have long histories of traditional use. Each entry covers identification and historical context. For current scientific evidence on any of these plants, see the NCCIH Herbs at a Glance fact sheets.[4]
Identification. A native prairie perennial in the daisy family (Asteraceae). The flower is unmistakable: drooping purple-pink ray petals around a raised, spiky, orange-brown central cone. Stems are stiff and upright, two to four feet tall. Leaves are lance-shaped, rough, and hairy, arranged alternately along the stem. Grows in prairies, open woods, and roadsides across central and eastern North America.
Traditional use. Indigenous peoples across the Great Plains used echinacea for a wide range of purposes. It became widely adopted in Western herbal practice as an immune support herb, most commonly associated with reducing the severity and duration of colds.
What the science says. Some studies show modest benefit for upper respiratory infections; results overall have been mixed. NCCIH notes that long-term use may affect the immune system and advises only short-term use. People allergic to plants in the daisy family (ragweed, chrysanthemums, marigolds) may have allergic reactions.[5]
ID features
Identification. A hardy perennial with finely divided, fern-like leaves that give it the species name millefolium ("a thousand leaves"). Flowers are small, white to pale pink, growing in dense, flat-topped clusters at the top of the stem. Stems are slightly hairy, one to three feet tall. The crushed leaves have a bitter, medicinal scent. Yarrow grows in meadows, roadsides, and open fields across North America and is one of the most widely distributed wild herbs on the continent.
Traditional use. Named for Achilles, who according to Greek tradition used it to treat soldiers' wounds. Yarrow has one of the longest and most consistent histories of any medicinal plant: it appears in folk medicine traditions across Europe, Asia, and North America for wound care, fever reduction, and digestive complaints. The genus name and the tradition are inseparable from the plant's identity.
A caution on identification. Yarrow's fern-like leaves and flat-topped white flower clusters place it visually near the carrot family (Apiaceae), even though it belongs to the daisy family. A new forager could confuse yarrow's white flowers with those of poison hemlock or water hemlock at a distance. The leaves are the distinction: yarrow's feathery, finely divided leaves look nothing like the coarser, compound leaves of hemlock species. Confirm with both the leaf and the flower before accepting the identification.
Identification. A low-growing annual with daisy-like flowers: white petals surrounding a raised yellow dome. The flower heads are small, about three-quarters of an inch across. The leaves are finely divided, thread-like, and feathery. When crushed, the flowers and leaves release a sweet, apple-like fragrance. Wild chamomile grows in disturbed ground, field edges, and roadsides.
Traditional use. One of the oldest and most widely used herbal teas in the world. Chamomile tea has been a household standby for calming nerves, settling stomachs, and easing sleep difficulty across European and Middle Eastern traditions for centuries. The dried flowers are steeped in hot water.
Cautions. Like echinacea, chamomile is in the daisy family, and people with ragweed allergies may react to it. Distinguish wild chamomile from similar-looking plants by the apple scent and by cutting the flower dome in half: true chamomile has a hollow center. Pineapple weed (Matricaria discoidea), a close relative without ray petals, is also safe and has a similar fragrance.
Identification and food use. Covered in detail on the Berry Foraging page, including the mandatory cooking rule and the pokeweed lookalike distinction. Elderberry is included here because it sits at the intersection of food and traditional medicine more than almost any other wild plant.
Traditional use. Elderberry syrup has a long history as a household remedy associated with immune support during cold and flu season. It is one of the most commercially popular herbal products in the United States. Remember: raw elderberries contain cyanogenic glycosides and must always be cooked before consuming. The cooking rule applies whether the berries are being used as food or as syrup.
Identification. Covered as an edible green on the Wild Herb Harvesting page. Broadleaf plantain has wide, ribbed leaves in a basal rosette; narrowleaf plantain has lance-shaped leaves. The parallel veins pull away as strings when the leaf is snapped. Grows in compacted soil, lawns, and pathways everywhere.
Traditional use. Plantain has been called "the band-aid plant" in folk traditions across multiple cultures. Crushed leaves were applied as a poultice to minor cuts, stings, and skin irritation. The leaves contain mild astringent and antimicrobial compounds. This external, first-aid-adjacent use is one of the simplest and oldest in the herbal tradition.
Identification. A perennial with opposite, small, oval leaves that appear perforated when held up to the light (tiny translucent dots are visible, which are oil glands). Flowers are bright yellow with five petals, clustered at the top of branching stems. If you crush a flower bud, it produces a reddish-purple stain on your fingers. The plant grows one to three feet tall in meadows, roadsides, and open disturbed ground.
Traditional use. One of the most studied herbs in the world, historically used for mood support and minor wound care. The name refers to John the Baptist, as the plant typically flowers around the Feast of St. John in late June.
The drug interaction warning. St. John's wort is included on this page primarily as a cautionary example. It is one of the most dangerous herbs for drug interactions. It accelerates the liver's processing of many medications, reducing their effectiveness. Documented interactions include antidepressants, blood thinners, oral contraceptives, immunosuppressants, HIV medications, and benzodiazepines.[2] This plant illustrates why "natural" and "safe" are not synonyms.
St. John's wort: known interactions
This is a partial list. Consult NCCIH and your provider for complete information.
Reliable information
The internet is saturated with herbal medicine claims, many of them unsupported, exaggerated, or outright dangerous. A search for any common herb returns thousands of pages attributing benefits that range from plausible to absurd, often without distinguishing between the two. Reliable sources exist, but you have to seek them out.
The National Center for Complementary and Integrative Health (NCCIH), part of the National Institutes of Health, publishes fact sheets on more than 50 common herbs and botanicals. Each sheet covers what the science says, potential side effects and cautions, and links to the research. These fact sheets are free, evidence-based, and written for consumers. Start here before trusting any other source.[4]
The same field guide and extension resources that support food foraging work for medicinal plant identification. Region-specific field guides that include medicinal plants are available from most major publishers. Your state cooperative extension office may offer workshops on wild plant identification. The iNaturalist platform can help generate identification hypotheses, but confirm with printed guides before acting on any identification.
If you are considering using any herbal product, whether foraged or purchased, tell your healthcare provider. This is not optional advice. It is the only way to check for interactions with your existing medications and conditions. Many providers will be supportive of your interest; they need to know what you are taking in order to keep you safe.
Ethical and legal considerations
Several plants with medicinal traditions are under conservation pressure. Echinacea angustifolia, the narrow-leaved species most valued in herbal traditions, has been overharvested in parts of its native prairie range. American ginseng (Panax quinquefolius) is heavily regulated and requires permits for harvest in many states. Goldenseal (Hydrastis canadensis) is listed as a species of concern by the United Plant Savers.
Before harvesting any plant for any purpose, check your state's endangered and at-risk species lists. The United Plant Savers maintains a list of at-risk native medicinal plants. Your state Department of Natural Resources can tell you what is protected in your area.
The one-third rule applies here as it does in all foraging, but for slow-growing woodland species like ginseng, goldenseal, and black cohosh, even one-third may be too much. For these species, observation and identification practice may be more valuable than harvest.
Keep going
The edible wild herbs: wood sorrel, chickweed, ramps, stinging nettles, and the sustainability story that goes with them.
Read the guide →
The five-feature identification process that applies to every plant on this page and every other.
Read the guide →
The full Foraging and Wild Food section: berries, nuts, herbs, mushrooms, and the journaling practice.
Browse the section →
Sources