Botanical Name : Ilex aquifolium
Species: I. aquifolium
Habitat: The Holly is a native of most of the central and southern parts of Europe. It grows very slowly: when planted among trees which are not more rapid in growth than itself, it is sometimes drawn up to a height of 50 feet, but more frequently its greatest height in this country is 30 to 40 feet, and it rarely exceeds 2 feet in diameter. In Italy and in the woods of France, especially in Brittany, it attains a much larger size than is common in these islands.
Holly is an evergreen tree growing to 10–25 m tall with a woody stem as large as 40–80 cm, rarely 1 m or more, in diameter The leaves are 5–12 cm long and 2–6 cm broad; they are evergreen, lasting about five years, and are dark green on the upper surface and lighter on the underside, oval, leathery, shiny, and about 5 to 9 cm long. In the young and in the lower limbs of mature trees, the leaves have three to five sharp spines on each side, pointing alternately upward and downward, while leaves of the upper branches in mature trees lack spines.
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The flowers are white, four-lobed, and pollinated by bees. Holly is dioecious, meaning that there are male plants and female plants. The sex cannot be determined until the plants begin flowering, usually between 4 and 12 years of age. In male specimens, the flowers are yellowish and appear in axillary groups. In the female, flowers are isolated or in groups of three and are small and white or slightly pink, and consist of four petals and four sepals partially fused at the base.
The fruit is a red drupe, about 6–10 mm in diameter, a bright red or bright yellow, which matures around October or November; at this time they are very bitter due to the ilicin content and so are rarely eaten until late winter after frost has made them softer and more palatable. They are eaten by rodents, birds and larger herbivores. Each fruit contains 3 to 4 seeds which do not germinate until the second or third spring. The fruit only appears on female plants, which require male plants nearby to fertilise them.
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.
“The leaves of Holly have been employed in the Black Forest as a substitute for tea”
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.
-Parts Used: Leaves, berries, bark.
Holly is rarely used medicinally, but is diuretic, relieves fevers, and has a laxative action.Ilex aquifolium also contains saponins, theobromine (a xanthine), ilicin, caffeine, caffeic acid, and a yellow pigment, ilexanthin.
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.
Many hundreds of hybrids and cultivars have been developed for garden use, among them the very popular “Highclere holly”, Ilex × altaclerensis (I. aquifolium × I. perado) and the “blue holly”, Ilex × meserveae (I. aquifolium × I. rugosa). Hollies are often used for hedges; the spiny leaves make them difficult to penetrate, and they take well to pruning and shaping.
Between the thirteenth and eighteenth centuries, before the introduction of turnips, Ilex aquifolium was cultivated for use as winter fodder for cattle and sheep. Less spiny varieties of holly were preferred, and in practice the leaves growing near the top of the tree have far fewer spines making them more suitable for fodder.
Ilex aquifolium was once among the traditional woods for Great Highland bagpipes before tastes turned to imported dense tropical woods such as cocuswood, ebony, and African blackwood.
Holly berries contain alkaloids, caffeine, and theobromine and are generally regarded as toxic to humans, though their poisonous properties are overstated and fatalities almost unknown. Accidental consumption may occur by children or pets attracted to the bright red berries. The berries are emetic. This is described as being due to the drug ilicin, though caffeine and theobromine found throughout the plant are much more toxic, generally, to dogs and cats
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.