From plant to use
Hot water poured over leaves and flowers: the simplest and most widely used preparation.
For an infusion you pour hot water over soft plant parts such as leaves, flowers and fine herbs and let them steep, covered. Flavour and aroma pass into the water without long heating. Almost every tradition knows this form, from European herbal teas and South American mate to North African mint tea.
Registry
Herbs on this site whose description mentions this preparation. That does not mean every herb is safe to prepare yourself: read the safety information for each one.
CautionEurope · Food · № 10
Citrus bergamia
The peel yields bergamot oil, a fragrance in perfume and Earl Grey tea. The oil contains bergapten, which makes the skin sensitive to sunlight. Health claims are not well studied.
CautionCentral America and the Caribbean · Food · № 818
Bixa orellana
The red seeds are used as a colouring and spice; traditionally also as a remedy.
CautionAsia · Herb · № 540
Premna obtusifolia
Traditionally attributed effects: strengthens the heart, stomachic, carminative, cleansing, tonic, anti-inflammatory, lowers blood sugar; for swellings, pain and diabetes; part of 'dashamula'.
CautionEurope · Herb · № 57
Agrimonia eupatoria
An astringent, tannin-rich herb traditionally used for diarrhoea, sore throats and minor wounds. Good human research is lacking.
CautionAsia · Herb · № 340
Trachyspermum ammi
Traditionally attributed effects: stimulating, carminative, tonic, aromatic, antispasmodic, antiseptic; for flatulence, indigestion, colic, diarrhoea, cholera, intestinal cramps; source of thymol; against worms.
CautionEurope · Herb · № 523
Mentha arvensis
Traditionally attributed effects: aromatic, carminative, stimulating, antispasmodic, promotes menstruation, antiseptic, stomachic, cooling, diuretic; leaf juice for diarrhoea and dysentery, tea for rheumatism and indigestion.
CautionAfrica · Herb · № 4
Aloe vera
The gel from the leaf is used externally to soothe the skin and for minor burns. Research on wound healing gives mixed results; the gel is no substitute for wound care.
CautionEurope · Herb · № 63
Artemisia absinthium
One of the most bitter herbs; traditionally used to stimulate appetite and digestion and against intestinal worms. Clinical evidence is limited.
CautionNorth America · Herb · № 158
Scutellaria lateriflora (en S. baicalensis)
Used in Western herbalism for nervousness, tension and sleep problems. A few small studies suggest a mild calming effect.
CautionNorth America · Herb · № 955
Glycyrrhiza lepidota
A legume with long, tough, sweet roots, related to true licorice. The root tastes of licorice; it contains less glycyrrhizin than Glycyrrhiza glabra.
CautionNorth America · Herb · № 992
Liquidambar styraciflua
A tall tree with star-shaped leaves, splendid autumn colours and spiky round seed balls. When the bark is wounded a fragrant resin, American storax, seeps out; for centuries it has gone into ointments, perfume and incense. The resin is mildly antiseptic.
CautionNorth America · Herb · № 996
Cunila origanoides
A low, woody plant of the mint family with small purple flowers in late summer that smells of oregano and mint. The leaf contains essential oil. On the first frosty nights the stems split and ice ribbons grow out of them, which gave it the name frost mint.
CautionNorth America · Herb · № 160
Panax quinquefolius
Chinese medicine regards it as more 'cooling' than Asian ginseng and uses it for fatigue and thirst. Some studies find a slight effect on post-meal blood sugar and colds; evidence is limited.
CautionNorth America · Herb · № 628
Asarum caudatum, A. canadense en verwante soorten
Traditionally attributed effects: expels wind-cold, opens a blocked nose, warms the lung in cough with clear phlegm and expels cold and dampness in menstrual pain and other pain.
CautionNorth America · Herb · № 932
Tilia americana
A large broadleaf tree with heart-shaped leaves and fragrant flowers, related to the European lime. The flowers contain mucilage and flavonoids. The wood is soft and easy to carve; the inner bark gives strong fibre.
CautionNorth America · Herb · № 951
Aralia racemosa
A tall perennial of the ivy family, related to ginseng, with a thick, aromatic root. Little studied.
CautionNorth America · Herb · № 997
Diospyros virginiana
A tree of the ebony family, related to the kaki. Unripe, the orange fruits are so astringent that they pucker the mouth, but after the first frost they are sweet and soft. They are rich in vitamin C. Bark and unripe fruits contain many tannins.
CautionAsia · Herb · № 349
Phyllanthus emblica
Traditionally attributed effects: fresh fruit cooling, diuretic, laxative, stomachic; bark astringent; for lung and eye inflammation, hair growth, asthma, bronchitis, bile complaints, bleeding, diarrhoea, dysentery, anaemia, jaundice.
CautionAsia · Herb · № 414
Andrographis paniculata
Traditionally attributed effects: stomachic, tonic, fever-reducing, cleansing, expels worms, promotes bile; for flatulence, lack of appetite, intestinal complaints in children, diarrhoea, dysentery, sluggish liver, nerve pain, recovery after fever.
CautionAfrica · Herb · № 422
Aristolochia bracteata
Traditionally attributed effects: laxative, promotes menstruation, cleansing, antipyretic, expels worms; strengthens contractions, for colic, absent or painful menstruation, intermittent fever, worms, skin diseases.
CautionSouth America · Herb · № 873
Luma apiculata
The Chilean myrtle, with cinnamon-coloured bark, fragrant leaves and edible black berries. Traditionally an astringent; research is lacking.
CautionAsia · Herb · № 569
Vernonia cinerea
Traditionally attributed effects: fever-reducing, induces sweating, cleansing; decoction promotes sweating in fever; seeds antidote, expel worms, for leprosy and chronic skin diseases; plant for bladder cramps, difficult urination, haemorrhoids; flowers for conjunctivitis.
CautionAsia · Herb · № 550
Saraca indica
Traditionally attributed effects: strongly astringent, calms the uterus; for uterine disorders, especially heavy menstruation, internal bleeding, haemorrhoids, bloody dysentery; root aphrodisiac and tonic, for cough, asthma, rheumatism, skin diseases, indigestion.
CautionSouth America · Herb · № 492
Eupatorium triplinerve
Traditionally attributed effects: stimulating, tonic, stimulates the heart, induces sweating, stops bleeding; bitter tonic for indigestion, cough and fever, against scurvy; cleanses foul ulcers.
CautionAsia · Herb · № 36
Panax ginseng (ook P. quinquefolius)
Research consists mostly of small, short studies; there is little evidence of health effects.
CautionEurope · Other · № 597
Usnea barbata
Traditionally attributed effects: antimicrobial, antifungal, immunomodulating, soothing, laxative, nourishing; against streptococci (sore throat), staphylococci, cellulitis and infected wounds, antiviral (HPV), yeast infections.
CautionAsia · Herb · № 404
Aegle marmelos
Traditionally attributed effects: ripe fruit cooling, nourishing, mildly laxative; unripe fruit astringent and aids digestion; for chronic diarrhoea and dysentery, asthma (leaves), intermittent fever, melancholy and palpitations.
CautionSouth America · Herb · № 869
Haplopappus baylahuen
A resinous shrub of the daisy family. A well-known Chilean tea for liver and bowel complaints; an effect has not been proven.
CautionAsia · Herb · № 552
Sida cordifolia
Traditionally attributed effects: cooling, astringent, stomachic, tonic, fever-reducing, soothing, diuretic; contains an ephedrine-like substance.
CautionNorth America · Herb · № 574
Populus balsamifera
Traditionally attributed effects: buds: stimulating, tonic, diuretic, soothing, expectorant; bark: expectorant, laxative; for skin problems (eczema, psoriasis), dry cough, constipation, kidney/bladder support, rheumatism and gout.
CautionNorth America · Herb · № 573
Abies balsamea
Traditionally attributed effects: stimulating, antiseptic, pain-relieving; for respiratory infections, cough and sore throat, cystitis and enteritis, aid to quitting smoking; externally for burns, wounds, haemorrhoids, muscle pain.
CautionAsia · Herb · № 134
Phyllostachys nigra
In Chinese medicine bamboo shavings (zhu ru) and bamboo sap are used for coughs with yellow phlegm, nausea and restlessness. Ayurveda uses silica-rich bamboo manna. Clinical research is scarce.
CautionAsia · Herb · № 431
Barleria prionitis
Traditionally attributed effects: cleansing, diuretic, tonic, fever-reducing; catarrh in children, prevents cracked feet, bleeding gums, toothache, ear infection, oedema, whooping cough, snake bites.
CautionAfrica · Herb · № 8
Ocimum basilicum
Traditionally used as an aromatic food plant and in herbal preparations.
CautionNorth America · Herb · № 950
Lindera benzoin
A shrub of the laurel family with fragrant leaves and twigs and red berries.
CautionEurope · Herb · № 276
Arctostaphylos uva-ursi
Traditionally attributed effects: urinary antiseptic, astringent.