English holly (Ilex aquifolium LINN.) Click on graphic for larger image

Holly

Botanical: Ilex aquifolium (LINN.)
Family: N.O. Aquifoliaceae

• History
• Description
• Cultivation
• Part Used
• Medicinal Action and Uses

Holly, the most important of the English evergreens, forming one of the most striking objects in the wintry woodland, with its glossy leaves and clusters of brilliant scarlet berries, is in the general mind closely connected with the festivities of Christmas, having been from very early days in the history of these islands gathered in great quantities for Yuletide decorations, both of the Church and of the home. The old Christmas Carols are full of allusions to Holly:

.......'Christmastide

Comes in like a bride,

With Holly and Ivy clad.'

An old legend declares that the Holly first sprang up under the footsteps of Christ, when He trod the earth, and its thorny leaves and scarlet berries, like drops of blood, have been thought symbolical of the Saviour's sufferings, for which reason the tree is called 'Christ's Thorn' in the languages of the northern countries of Europe. It is, perhaps, in connexion with these legends that the tree was called the Holy Tree, as it is generally named by our older writers. Turner, for instance, refers to it by this name in his Herbal published in 1568. Other popular names for it are Hulver and Holme, and it is still called Hulver in Norfolk, and Holme in Devon, and Holme Chase in one part of Dartmoor.

Pliny describes the Holly under the name of Aquifolius, needle leaf, and adds that it was the same tree called by Theophrastus Crataegus, but later commentators deny this. Pliny tells us that Holly if planted near a house or farm, repelled poison, and defended it from lightning and witchcraft, that the flowers cause water to freeze, and that the wood, if thrown at any animal, even without touching it, had the property of compelling the animal to return and lie down by it.

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---Description---It sometimes sends up a clean stem furnished with a bushy head, or it may form a perfect pyramid, leafy to the base. The trunk, like that of the Beech, frequently has small wood knots attached to it: these are composed of a smooth nodule of solid wood embedded in bark, and may be readily separated from the tree by a smart blow. The bark is of a remarkably light hue, smooth and grey, often touched with faint crimson, and is very liable to be infected with an exceedingly thin lichen, the fructification of which consists of numerous curved black lines, closely resembling Oriental writing.

The leaves are thick and glossy, about 2 inches long and 1 1/4 inch broad, and edged with stout prickles, whose direction is alternately upwards and downwards, and of which the terminal one alone is invariably in the same plane as the leaf. The upper leaves have mostly only a single prickle. The leaves have neither taste nor odour. They remain attached to the tree for several years, and when they fall, defy for a long time the action of air and moisture, owing to their leathery texture and durable fibres, which take a long time to decay.

Professor Henslow says:

'It has been gravely asserted that holly leaves are only prickly on trees as high as a beast can reach, but at the top it has no spines; that spiny processes of all sorts are a provision of Nature against browsing animals. The truth is that they are the result of drought. A vigorous shoot of Holly may have small leaves without spines at the base, when vigour was beginning; normal, large leaves in the middle when growth was most active; and later on small spineless leaves again appear as the annual energy is declining. Moreover, hollies of ten grow to twenty feet in height, with spiny leaves throughout, and if spineless ones do occur at the top, it is only the result of lessened energy. A cow has been known to be partial to some holly bushes within reach, which had to be protected, just as another would eat stinging-nettles: and the camel lives upon the "Camel-thorn." This animal has a hardened pad to the roof of its mouth, so feels no inconvenience in eating it.'

The berries, though eaten by birds, are injurious to human beings, and children should be warned against them. Deer will eat the leaves in winter, and sheep thrive on them. They are infested with few insects.

The ease with which Holly can be kept trimmed renders it valuable as a hedge plant: it forms hedges of great thickness that are quite impenetrable.

It has been stated by M. J. Pierre, that the young stems are gathered in Morbihan by the peasants, and made use of as a cattle-food from the end of November until April, with great success. The stems are dried, and having been bruised are given as food to cows three times daily. They are found to be very wholesome and productive of good milk, and the butter made from it is excellent.

It is also well known to rabbit-breeders that a Holly-stick placed in a hutch for the rabbits to gnaw, will act as a tonic, and restore their appetite.

The wood of Holly is hard, compact and of a remarkable even substance throughout. Except towards the centre of very old trees, it is beautifully white, and being susceptible of a very high polish, is much prized for ornamental ware, being extensively used for inlaying, as in the so-called Tunbridge ware. The evenness of its grain makes it very valuable to the turner. When freshly cut, it is of a slightly greenish hue, but soon becomes perfectly white, and its hardness makes it superior to any other white wood. As it is very retentive of its sap and warps in consequence, it requires to be well dried and seasoned before being used. It is often stained blue, green, red or black; when of the latter colour, its principal use is as a substitute for ebony, as in the handles of metal teapots. Mathematical instruments are made of it, also the blocks for calico printing, and it has been employed in wood engraving as a substitute for boxwood, to which, however, it is inferior. The wood of the silver-striped variety is said to be whiter than that of the common kind.

A straight Holly-stick is much prized for the stocks of light driving whips, also for walking-sticks.

The common Holly is the badge of the Drummonds.

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---Cultivation---The Holly will grow in almost any soil, provided it is not too wet, but attains the largest size in rich, sandy or gravelly loam, where there is good drainage, and a moderate amount of moisture at the roots, for in very dry localities it is usually stunted in its growth, but it will live in almost any earth not saturated with stagnant water. The most favourable situation seems to be a thin scattered wood of Oaks, in the intervals of which it grows up at once. It is rarely injured by even the most severe winters.

Holly is raised from seeds, which do not germinate until the second year, hence the berries are generally buried in a heap of earth for a year previously to being sown. The young plants are transplanted when about a foot or 18 inches high, autumn being the best time for the process. If intended for a hedge, the soil around should be previously well trenched and moderately manured if necessary. Holly exhausts the soil around it to a greater extent than most deciduous trees. At least two years will be needed to recover the check given by transplanting. Although always a slow grower, Holly grows more quickly after the first four or five years.

The cultivated varieties of Holly are very numerous: of these one is distinguished by the unusual colour of its berries, which are yellow. Other forms are characterized by the variegated foliage, or by the presence of a larger or smaller number of prickles than ordinary.

In winter the garden and shrubbery are much indebted to the more showy varieties for the double contrast afforded by their leaves and berries. They are propagated by grafting on four- or five-year-old plants of the common sort and by cuttings.

The best time to cut down Holly is early in the spring, before the sap rises. A sloping cut is preferable to a straight one, as moisture is thus prevented from remaining on the cut portion, and as an additional precaution the wound should be covered with a coating of tar. The side growths should be left, as they will help to draw up the sap.

---Part Used---The leaves and berries, also the bark. The leaves are used both fresh and dried, but usually in the dried condition, for which they are collected in May and June. They should be stripped off the tree on a dry day, the best time being about noon, when there is no longer any trace of dew on them. All stained or insect-eaten leaves must be rejected.

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---Medicinal Action and Uses---Holly leaves were formerly used as a diaphoretic and an infusion of them was given in catarrh, pleurisy and smallpox. They have also been used in intermittent fevers and rheumatism for their febrifugal and tonic properties, and powdered, or taken in infusion or decoction, have been employed with success where Cinchona has failed, their virtue being said to depend on a bitter principle, an alkaloid named Ilicin. The juice of the fresh leaves has been employed with advantage in jaundice.

The berries possess totally different qualities to the leaves, being violently emetic and purgative, a very few occasioning excessive vomiting soon after they are swallowed, though thrushes and blackbirds eat them with impunity. They have been employed in dropsy; also, in powder, as an astringent to check bleeding.

Culpepper says 'the bark and leaves are good used as fomentations for broken bones and such members as are out of joint.' He considered the berries to be curative of colic.

From the bark, stripped from the young shoots and suffered to ferment, birdlime is made. The bark is stripped off about midsummer and steeped in clean water; then boiled till it separates into layers, when the inner green portion is laid up in small heaps till fermentation ensues. After about a fortnight has elapsed, it becomes converted into a sticky, mucilaginous substance, and is pounded into a paste, washed and laid by again to ferment. It is then mixed with some oily matter, goosefat being preferred, and is ready for use. Very little, however, is now made in this country. In the north of England, Holly was formerly so abundant in the Lake District, that birdlime was made from it in large quantities and shipped to the East Indies for destroying insects.

The leaves of Holly have been employed in the Black Forest as a substitute for tea. Paraguay Tea, so extensively used in Brazil, is made from the dried leaves and young shoots of another species of Holly (Ilex Paraguayensis), growing in South America, an instance of the fact that similar properties are often found in more than one species of the same genus.

I. Gongonha and I. Theezans, also used in Brazil as tea, and like I. Paraguayensis are valuable diuretics and diaphoretics. The leaves of I. Paraguayensis and several others are used by dyers; the unripe fruits of I. Macoucoua abound in tannin, and bruised in a ferruginous mud, are used in dyeing cotton, acting something like galls.

See PARAGUAY.

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