North America · Herb · № 969
Western hemlock
Tsuga heterophylla
A large conifer with a drooping top and short, flat needles. The bark is very rich in tannins; the young needles contain vitamin C.
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.
North America · Herb · № 969
Tsuga heterophylla
A large conifer with a drooping top and short, flat needles. The bark is very rich in tannins; the young needles contain vitamin C.
North America · Herb · № 587
Larix occidentalis
Traditionally attributed effects: stimulating, prebiotic; improves digestion and gut flora, strengthens the immune system, studied in tumours, helps with middle ear infections in children.
North America · Herb · № 190
Thuja occidentalis
Traditionally attributed effects: expels worms, astringent, antimicrobial, anti-inflammatory, stimulates muscles, antiseptic.
Africa · Herb · № 921
Leonotis leonurus
A shrub of the mint family, two to three metres tall, with orange, tubular flowers in whorls around the square stems. Contains marrubiin and leonurine, as well as labdane compounds. Considered mildly calming; which substance causes the effect is not yet clear.
Africa · Herb · № 810
Artemisia afra
A bitter, aromatic herb widely used in southern Africa for coughs, colds, fever and flu.
North America · Herb · № 961
Monarda fistulosa
A mint with lilac flowers and strongly scented leaves, related to Oswego tea. The volatile oil is rich in carvacrol and thymol, which are antiseptic.
Europe · Herb · № 194
Lonicera caprifolium, L. periclymenum
The sweet-scented flowers were used as tea or syrup for coughs. The berries are poisonous. In Chinese medicine the related Japanese honeysuckle (jin yin hua) is used for fever and sore throat.
North America · Herb · № 156
Prunus serotina
The dried bark was long used in cough syrups to calm irritating coughs. Modern clinical evidence is lacking.
North America · Herb · № 952
Aralia nudicaulis
A low plant of the ivy family with a long, creeping, aromatic root; related to ginseng and no relative of true sarsaparilla (Smilax).
Europe · Herb · № 838
Thymus serpyllum
An aromatic herb traditionally used for coughs and digestive complaints.
Asia · Herb · № 459
Centratherum anthelminticum
Traditionally attributed effects: expels worms (threadworms), tonic, stomachic, diuretic; for skin diseases and scorpion stings.
North America · Herb · № 634
Gaultheria procumbens
Traditionally attributed effects: expels wind and dampness and cools heat in hot, swollen joints and muscle pain, drains damp heat in the urinary tract and moves stagnant qi and blood in pain.
Asia · Herb · № 128
Morus alba en M. nigra
The leaf (sang ye) is being studied for post-meal blood sugar and is used in Chinese medicine for coughs and fevers; bark, twigs and berries each have their own use too. Evidence is preliminary.
North America · Herb · № 823
Salvia apiana
An aromatic sage burned in ceremonies by Indigenous peoples of California.
South America · Herb · № 878
Smallanthus sonchifolius
A plant of the daisy family with sweet, crunchy tubers full of inulin and fructo-oligosaccharides, which the body barely absorbs. The leaf has been studied for diabetes; evidence in humans is lacking.
North America · Herb · № 986
Xanthorhiza simplicissima
A low shrub of the buttercup family, one of the few woody species in that family. Root and stem are bright yellow from berberine, a bitter substance also found in goldenseal and barberry that inhibits bacteria and fungi.
South America · Food · № 15
Ilex paraguariensis
The leaves contain caffeine, theobromine and polyphenols; the drink is stimulating and dispels tiredness, like coffee or tea. It is a beverage and social drink, not a medicine.
Central America and the Caribbean · Herb · № 922
Calea ternifolia (syn. Calea zacatechichi)
A shrub of the daisy family with very bitter leaves. Contains caleicine and other sesquiterpene lactones, among others. Said to make sleep light and dreams clear and vivid; in a small study an extract caused a slight change of perception, drowsiness and a short sleep with vivid dreams.
Asia · Herb · № 478
Curcuma zedoaria
Traditionally attributed effects: stimulating, carminative, expectorant, soothing, diuretic, skin-irritant, purifies the blood.
Asia · Herb · № 424
Artemisia maritima
Traditionally attributed effects: antipyretic, mildly laxative, stomachic, tonic, expels worms, stimulates the heart; against worms, compress for inflammation, tumours and foul ulcers.
North America · Herb · № 150
Actaea racemosa
Mainly sold for menopausal symptoms such as hot flushes. NCCIH reports that study results are mixed and there is not enough evidence that it helps.
Asia · Herb · № 18
Glycyrrhiza glabra
A root with long use in several traditions; high-quality evidence does not support most health claims.
Asia · Herb · № 121
Artemisia annua
Source of artemisinin, the basis of today's standard malaria treatment. Teas or herbal preparations, however, are not a reliable malaria treatment; the WHO advises against them.
Central America and the Caribbean · Herb · № 850
Annona muricata
A tree with a large, sweet-sour fruit. The leaf is drunk as a calming tea. Claims that soursop cures cancer are unproven.
Europe · Herb · № 554
Solanum nigrum
Traditionally attributed effects: cleansing, calming, induces sweating and urination, expectorant; for oedema, chronically enlarged liver, jaundice, chronic skin diseases, coughing up blood, haemorrhoids, kidney and bladder inflammation, gonorrhoea, eye diseases; pain-relieving wash.
North America · Herb · № 576
Juglans nigra
Traditionally attributed effects: cleansing, laxative, astringent, antibacterial, antiparasitic, antifungal; cleanses and strengthens the large intestine, for skin problems, traveller's diarrhoea, sinusitis, underactive thyroid.