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Ilex aquifolium - L.                
                 
Common Name Holly
Family Aquifoliaceae
Synonyms Aquifolium croceum. Aquifolium heterophyllum. Aquifolium ilex. Ilex balearica
Known Hazards The fruit and probaby other parts of the plant contain saponins and are toxic, causing diarrhoea, vomiting and stupor[10, 274]. However, toxicity levels are low and it is only in very large doses that problems are likely to arise[65, 76]. Do not exceed recommended doses. Fruits particularly poisonous to children [301].
Habitats Found in most well-drained soils in scrub, hedges and woodland where it is often the dominant under-storey shrub[7].
Range Western and central Europe, including Britain, from Norway to Germany south to the Mediterranean.
Edibility Rating  
Medicinal Rating  
Care
Fully Hardy Well drained soil Moist Soil Full shade Semi-shade Full sun

Summary       

Physical Characteristics       
 icon of manicon of shrub
Ilex aquifolium is an evergreen Shrub growing to 9 m (29ft) by 5 m (16ft) at a slow rate.
It is hardy to zone 6 and is not frost tender. It is in leaf 12-Jan It is in flower from May to June, and the seeds ripen from Nov to March. The flowers are dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required) and are pollinated by Bees.The plant is not self-fertile.
It is noted for attracting wildlife.


USDA hardiness zone : Coming soon


Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very acid soils.
It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers dry or moist soil and can tolerate drought. The plant can tolerate maritime exposure.
It can tolerate atmospheric pollution.

Ilex aquifolium Holly


http://commons.wikimedia.org/wiki/File:Illustration_Ilex_aquifolium0.jpg
Ilex aquifolium Holly
http://commons.wikimedia.org/wiki/User:Llez
   
Habitats       
Woodland Garden Secondary; Sunny Edge; Dappled Shade; Shady Edge; not Deep Shade; Ground Cover; Hedge;
Edible Uses                                         
Edible Parts:
Edible Uses: Tea.

The leaves have been used as a tea substitute[4]. The roasted fruit has been used as a coffee substitute[7]. Some caution is advised here, since the fruit can be purgative and emetic[K].
Medicinal Uses


Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Astringent;  Bach;  Diaphoretic;  Diuretic;  Emetic;  Expectorant;  Febrifuge;  Purgative.

Holly is little used in modern herbalism. The leaves are diaphoretic, expectorant, febrifuge and tonic[4, 9, 21]. They can be use fresh at almost any time of the year or can be harvested in late spring and dried for later use[4, 9]. They are used in the treatment of intermittent fevers, rheumatism, catarrh, pleurisy etc[4, 238, 254]. The juice of the fresh leaves has been successfully used in the treatment of jaundice[4]. The berries are violently emetic and purgative[4, 7]. They have been used in the treatment of dropsy and as a powder they have been used as an astringent to check bleeding[4]. The berries are toxic, especially to children, and should not be used medicinally except under professional supervision[254]. The root has been used as a diuretic, though there are more effective diuretics available[7]. The plant is used in Bach flower remedies - the keywords for prescribing it are 'Hatred', 'Envy', 'Jealousy' and 'Suspicion'[209].
Other Uses
Fuel;  Hedge;  Hedge;  Wood.

An excellent hedge plant, tolerating hard clipping and maritime exposure and forming a dense stock-proof shelter[4, 11, 29, 75, 186]. Plants are fairly slow growing however[11]. The cultivar 'Pendula' makes a very good carpeting ground cover plant when grown as a cutting on its own roots[208]. It can be planted up to 1.2 metres apart each way, but is fairly slow to cover the ground[208]. Wood - strong, hard and dense, it polishes well, though it must be well dried and seasoned or else it warps badly. It is beautifully white, except at the centre of very old trees, and is highly regarded by cabinet makers though it must be well seasoned[4, 7, 46, 61]. The heartwood of mature trees is used for printing blocks, engravings, turnery etc[11, 115]. The wood makes a good fuel, burning well even when green[6].
Cultivation details                                         
Succeeds in most soils, including peat, chalk, gravels, sand and shales[186], so long as they are not water-logged, though wild plants are occasionally found in situations with standing winter water[186]. Grows well in heavy clay soils[186]. Established plants are fairly drought tolerant[186]. Dislikes dry soils according to one report[31] whilst another says that it succeeds in dry shade[188]. Tolerates a pH range from 3.5 to 7.2[186]. Succeeds in full sun or fairly dense shade[17, 28, 31], self-sown seedlings from woods and shady places making the most shade tolerant plants[28]. Tolerant of maritime exposure[75] though in such a situation it may lose some or all its leaves in the winter[186]. Plants require a minimum July temperature of 12°c for good fruit production[186]. They tolerate short periods in winter down to -15°c[184]. Severe frosts can kill whole branches, especially if they are open to the sky[186]. The young growth in spring can be damaged by late frosts. A very ornamental plant, there are many named varieties[182]. Flowers and fruits are formed on wood of the previous year's growth[229]. A good bee plant[108], the minute flowers are sweetly scented[245]. The fruit is a valuable winter food source for birds. Resents root disturbance, especially as the plants get older[11]. It is best to place the plants into their permanent positions as soon as possible, perhaps giving some winter protection for their first year or two[K]. Only move the plants in May or, preferably, in September[1]. Plants are quite slow growing, even when in good soils and situations[11, 75]. Trees are usually dioecious but hermaphrodite forms are available. Male and female plants must usually be grown if seed is required. Plants are capable of regenerating from the main stem both above and below ground level and, although the top may be killed in a fire, the plants will usually regrow from the base[186]. Rabbits are particularly fond of this species and will quickly remove the bark. This species is notably resistant to honey fungus[200].
                                                                                 
Propagation                                         
Seed - best sown as soon as it is ripe in the autumn in a cold frame. It can take 18 months to germinate. Stored seed generally requires two winters and a summer before it will germinate and should be sown as soon as possible in a cold frame. Scarification, followed by a warm stratification and then a cold stratification may speed up the germination time[78, 80]. The seedlings are rather slow-growing. Pot them up into individual pots when they are large enough to handle and grow them on in light shade in a cold frame for their first year. It is possible to plant them out into a nursery bed in late spring of the following year, but they should not be left here for more than two years since they do not like being transplanted. Alternatively, grow them on in their pots for a second season and then plant them out into their permanent positions in late spring or early summer. Give them a good mulch and some protection for their first winter outdoors. Cuttings of almost ripe wood with a heel, August in a shaded position in a cold frame. Leave for 12 months before potting up. Layering in October. Takes 2 years.
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Expert comment                                         
 
      
Author                                         
L.
                                                                                 
Botanical References                                         
1117200
                                                                                 
Links / References                                         

  [K] Ken Fern Notes from observations, tasting etc at Plants For A Future and on field trips.

[1]F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[4]Grieve. A Modern Herbal.
Not so modern (1930's?) but lots of information, mainly temperate plants.
[6]Mabey. R. Plants with a Purpose.
Details on some of the useful wild plants of Britain. Poor on pictures but otherwise very good.
[7]Chiej. R. Encyclopaedia of Medicinal Plants.
Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.
[9]Launert. E. Edible and Medicinal Plants.
Covers plants in Europe. a drawing of each plant, quite a bit of interesting information.
[11]Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
A classic with a wealth of information on the plants, but poor on pictures.
[17]Clapham, Tootin and Warburg. Flora of the British Isles.
A very comprehensive flora, the standard reference book but it has no pictures.
[21]Lust. J. The Herb Book.
Lots of information tightly crammed into a fairly small book.
[28]Knight. F. P. Plants for Shade.
A small but informative booklet listing plants that can be grown in shady positions with a few cultivation details.
[29]Shepherd. F.W. Hedges and Screens.
A small but informative booklet giving details of all the hedging plants being grown in the R.H.S. gardens at Wisley in Surrey.
[31]Brown. Shade Plants for Garden and Woodland.
[46]Uphof. J. C. Th. Dictionary of Economic Plants.
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
[61]Usher. G. A Dictionary of Plants Used by Man.
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
[75]Rosewarne experimental horticultural station. Shelter Trees and Hedges.
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
[78]Sheat. W. G. Propagation of Trees, Shrubs and Conifers.
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
[80]McMillan-Browse. P. Hardy Woody Plants from Seed.
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
[108]International Bee Research Association. Garden Plants Valuable to Bees.
The title says it all.
[115]Johnson. C. P. The Useful Plants of Great Britain.
Written about a hundred years ago, but still a very good guide to the useful plants of Britain.
[182]Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos.
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
[184]Phillips. R. & Rix. M. Shrubs.
Excellent photographs and a terse description of 1900 species and cultivars.
[186]Beckett. G. and K. Planting Native Trees and Shrubs.
An excellent guide to native British trees and shrubs with lots of details about the plants.
[188]Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers
Excellent range of photographs, some cultivation details but very little information on plant uses.
[200]Huxley. A. The New RHS Dictionary of Gardening. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[208]Thomas. G. S. Plants for Ground Cover
An excellent detailled book on the subject, very comprehensive.
[209]Chancellor. P. M. Handbook of the Bach Flower Remedies
Details the 38 remedies plus how and where to prescribe them.
[229]Elias. T. The Complete Trees of N. America. Field Guide and Natural History.
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
[238]Bown. D. Encyclopaedia of Herbs and their Uses.
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
[245]Genders. R. Scented Flora of the World.
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
[254]Chevallier. A. The Encyclopedia of Medicinal Plants
An excellent guide to over 500 of the more well known medicinal herbs from around the world.
[301]Karalliedde. L. and Gawarammana. I. Traditional Herbal Medicines
A guide to the safer use of herbal medicines.

Readers comment                                         
 
Elizabeth H.
David Nicholls Sat Aug 18 04:50:04 2001
It is interesting that the leaf contains theobromine (in cocoa,similar to caffine)(Potters New Cyclopaedea of Botanical Drus and Preparations. R.C.Wren). and that theobromine can be commercially converted into caffeine by methylation with methyl chloride in presence of caustic soda (Encyclopaedia Britannica 1:603 1976). Perhaps this could be a way for 1st world, cold, temperate climates to get their caffine fix without having to have third world nations do all that cheap labor for them. I dont know much about chemistry and am only pointing it out, no idea how much expertise required, interested to hear from anyone who does.

This plant may also recover after a fire.(D.Heinjus Farm Tree Planting 1992)

Elizabeth H.
edward Sun Jan 24 2010
David Nicholls has made a lovely connection and I don't see a theoretical problem with it - I understand that there are bacteria which have been modified to turn theobromine into caffeine and vice versa, which would probably present a cheaper way of doing it. However, it will never happen for one good reason: caffeine isn't coffee - no one would plunk a caffeine pill into a cup of hot water to savour the aroma. It is true that many non-coffee products contain caffeine and the lion's share of that caffeine is sourced from the de-caffinated coffee industry. Holly will indeed recover from a burnt stump: in my late grandmother's garden, someone build a fire in an adjoining field which spread into an area of her garden where a the remains of a disused shed caught fire. A young holly tree was one of the casualties. The following year, it resprouted from ground level. Very impressive, but not a recommended hard pruning technique! It is easy to tell males and females apart once they begin to flower: male flowers have four stamens poking outwards, while female flowers have a green bump in the middle with a single stigma rising from the top.

Ashridge Trees - Holly Trees More about Holly

Frederico V.
Jul 28 2011 12:00AM
in portuguese: azevinho
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