Herb: Box Myrtle

Latin name: Myrica nagi

Synonyms: Myrica esculenta, Myrica integrifolia, Myrica sapida

Family: Myricaceae (Bayberry Family)

Medicinal use of Box Myrtle:

The bark is antirheumatic, antiseptic, aromatic, astringent, carminative, ophthalmic and stimulant. It has proved useful in the treatment of fevers, asthma and coughs. The juice is applied to treat rheumatism. Mixed with ginger, it is used as a rubefacient in the treatment of cholera. The juice of the bark is taken internally in the treatment of catarrh and headaches, and is applied externally to cuts and wounds. A decoction of the bark is used in the treatment of fevers, asthma and diarrhoea. This decoction is boiled to form a gelatinous mass that is applied as a poultice on sprains. Combined with the bark of Quercus lanata, it is used as a decoction in the treatmnt of dysentery. The juice of the unripe fruit is used as an anthelmintic.

Description of the plant:


12 m
(39 feet)

Habitat of the herb:

Drier aspects to 1800 metres. Open, mixed forests on mountain slopes at elevations of 300 - 2500 metres.

Edible parts of Box Myrtle:

Fruit - raw or cooked. Sweet with a pleasant blend of acid, they are very pleasant eating. About 13mm in diameter. The fruit contains about 12.6% sugar, 1% protein, 0.4% ash. Low in vitamin C, about 4.1mg per 100ml. The fruit does not keep well, only lasting in good condition for 2 - 3 days after picking. Yields from mature trees can be as high as 25kg per year, but are more often around 15.5kg.

Other uses of the herb:

A wax covering on the fruit is extracted by scalding the fruit with boiling water and immersing them for a few minutes, the wax floats to the surface and is then skimmed off. The fruit is then boiled in water to extract the wax from the pulp and once more the wax is skimmed off. It is then strained through a muslin cloth and can be used to make aromatic candles. Candles made from this wax are quite brittle but are less greasy in warm weather. They are slightly aromatic and do not smoke when put out, making them much more pleasant to use that wax or tallow candles. The wax is also used in making soaps. A yellow dye is obtained from the bark. The plant is a source of tannin. (Probably the bark or the leaves.) The bark is said to contain 60 - 80% tannin. Wood - hard, close-grained. a good fuel. Used mainly for fuel, though it is sometimes used for making poles for construction.

Propagation of Box Myrtle:

Seed - best sown as soon as it is ripe in the autumn in a cold frame. Barely cover the seed and keep it moist. Stored seed germinates more freely if given a 3 month cold stratification and then sown in a cold frame. Germination is usually good. Prick out the seedlings into individual pots when they are large enough to handle and grow on in the cold frame for the first winter. Plant out in late spring or early summer. Cuttings of half-ripe wood, 5 - 8cm with a heel, July/August in a frame. Pot up and overwinter in a cold frame. Fair to good percentage. Cuttings of mature wood in November/December in a frame. Layering in spring. Division of suckers in the dormant season. Plant them out direct into their permanent positions.

Cultivation of the herb:

Drier aspects to 1800 metres. Open, mixed forests on mountain slopes at elevations of 300 - 2500 metres.

Known hazards of Myrica nagi:

Although no reports of toxicity have been seen for this species, there is a report for some members of this genus that some of the constituents of the wax might be carcinogenic.

Plant information taken from the Plants For A Future.