ERICA'S NOTEBOOK
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  • Ilex genus

Ilex genus

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Common name: Holly


Ilex is a genus of trees, shrubs and climbers with glossy leaves and berries.


Erica's Original Notes

Hollies brighten our dark winter days with their leaves and coloured berries, not all of which are the usual red we associate with holly. (The botanical name Ilex means 'dark tree' in Greek). The holly can be found in both hemispheres and is not always evergreen. Two particularly interesting hollies: one from South America (Ilex paraguayensis) whose leaves are used to make the tea 'yerba mate', containing 6% caffeine; the other was used by Native Indians of the U.S. southwest in pre-battle purification rites and has the appropriate name of Ilex vomitoria!


The colour red, as seen in the berries, denoted in ancient times good or life-giving qualities, and the sharp pointed leaves were an asset in keeping the evil spirits at bay. The Japanese also recommended that holly should be planted by the door of the house for the same reason.


The flowers are usually dioecious, that is to say, the male and female flowers are on separate trees, and it is therefore important to choose a female tree if you want berries. England is home to the holly we associate with Christmas (Ilex aquifolium) with its bright shiny leaves. This holly was crossed with one from the Azores (Ilex perado); this cross resulted in the many vigorous and beautiful hybrids that we have to-day, the Highclere hybrids known as 'altaclarensis'. One would hope that their names might give one some idea of their sex, especially in varieties named King and Queen, but a joker stepped in and one finds that Silver Queen is indeed male while Golden King is female; however, Milkboys are reassuringly male! The native North American holly (Ilex opaca) is much hardier, flowers and therefore berries, being borne on new spring growth, but it has dull green leaves. One last holly of note is Perny's holly, a sparkling little tree named after a French missionary.


We all like odd curiosities, and the one I like best for holly was the holly hedge at Say's Court, home of John Evelyn, the diarist (1620-1706), which was over 400 feet long, nine feet high and five feet wide. It was damaged by a tenant, the Czar of Russia, Peter the Great, who wanted to be near the Deptford naval yards to oversee the building of ships for the Russian navy; he insisted on being pushed through the hedge in a wheelbarrow---a rather masochistic past-time and hard on the poor servant!


NOTES: The wood of holly is very dense and•fine; it is used as inlay, and dyed black as a substitute for ebony. It is very resistant to pollution, and lastly,


Updates 2013 (LM)

The former Holly Collection was removed in 2010 to clear the site for the new Visitor Centre which opened in October 2011. Because hollies are an invasive plant in our local forests, the removal of the main collection was in keeping with the Garden’s principles of environmental stewardship. However, several species of holly are still represented in the Garden. Because the fruits of holly are eaten by birds and spread by them, one can minimize their potential invasiveness by only growing male cultivars.


Updates 2013 (CK)

When the Holly Collection was removed (see above), cuttings were taken of all the various holly species and given to the Royal Botanic Garden in Hamilton and to Scott Arboretum of Swarthmore College, Pennsylvania


Useful Links




  • Highclere (aka Downton Abbey) Holly


Photo of I. aquifolium 'San Gabriel' by Midge Oke

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  • Home
  • Updates
    • What's New
    • Curator Updates
    • Garden Stories >
      • Garden Story Index
    • Self-Guided Tours
    • Walks & Talks >
      • Walks and Talks 2022
      • Walks -Talks 2021 & Zoom Tips
    • PDFs of Updates, Tours, & Talks >
      • Self-guided Tours (PDF)
      • Gardener Walks (PDF)
  • Plant IDs
    • ID By Flower Color >
      • Red Flowers
      • Pink Flowers
      • Orange Flowers
      • Yellow Flowers
      • Green Flowers
      • Blue Flowers
      • Purple Flowers
      • White Flowers
    • ID By Type >
      • Annuals
      • Berries-Fruits-Nuts
      • Bulbs, Corms, Rhizomes, Tubers >
        • Bulbs
        • Corms
        • Rhizomes
        • Tubers
      • Ferns
      • Grasses
      • Medicinal Plants
      • Native Plants
      • Perennials >
        • Peonies
        • Salvias
      • Rhododendrons >
        • Rhodendron Erica Notes
      • Shrubs >
        • Calycanthus
        • Hydrangeas >
          • Hydrangea Background
        • Peonies >
          • Peonies-Overview
        • Rhododendrons
        • Roses >
          • Rose Background
      • Trees >
        • Conifers >
          • Cypress
          • Firs
          • Pines
        • Deciduous Trees >
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          • Ginkgos
          • Magnolias
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        • Native Trees
        • Tree of the Month
  • In the Garden
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    • Art in the Garden >
      • Symposium & Exhibitions
    • Building and Grounds >
      • Bridges
      • Formal Rose Garden Hardscape and Art
      • Grotto Area & Black Garden
      • Korean Pavilion
      • Maze
    • Gardener Assignments
    • Collections >
      • Ash Collection
      • Camellia Collection
      • Rhododendron Walk
    • Gardens >
      • Gardens A-D >
        • Alma VanDusen Garden
        • Bentall Garden
        • Black Garden
        • Canadian Heritage Garden >
          • Bees
          • Canadian Heritage Orchard
        • Cascadia Garden
        • Cherry Grove
        • Chilean Garden
      • Gardens E-H >
        • Eastern North America Garden
        • Fern Dell
        • Formal Rose Garden
        • Fragrance Garden
        • Heather Garden
        • Herb Garden
        • Heritage Rose Garden
      • Gardens I-P >
        • Laburnum Walk
        • Livingstone Lake
        • Meconopsis Dell
        • Meditation Garden
        • Mediterranean Garden
        • Ornamental Grasses
        • Perennial Garden
      • Gardens R-Z >
        • Rhododendron Walk
        • Sino-Himayalan Region
        • South African Garden
        • Southern Hemisphere
        • Stone Garden
        • Vegetable Garden
        • Woodland Garden
    • Garden History
  • Science
    • Animals & Insects >
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      • Butterflies and Moths
      • Insect Friends
      • Small Creatures
    • Buds
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