Holly

English holly (Ilex aquifolium) is a deciduous evergreen prevalent locally and in the UK, Western Europe and beyond. It’s highly resilient, tolerating frost and seasonal drought, and adaptable, thriving in shade but quick to populate new habitat as a pioneer species.

Also known as European or common holly, this species can live for up to 300 years and reach over 15m in height. It’s instantly recognisable, largely due to its shiny, hard, dark green leaves with sharp prickles, and its bright scarlet berries that survive winter. It has a thin, smooth light brown-grey bark and four-petalled white flowers that bloom in spring.

Unlike some other species, holly has separate male and female trees, making it dioecious.

Holly is great for wildlife, providing food and habitat for birds and small mammals including dormice and hedgehogs. Its heavy white wood is good for making furniture or burning as firewood and its foliage is common in Christmas decorations.

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Bright scarlet berries that mature in autumn and survive winter are another means of recognition. They only appear on females, fertilised by nearby males.

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All species of Ilex (holly) are dioecious, meaning male and female plants are separate. Examples of the opposite – monoecious trees – include birch, chestnut and walnut.

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Because holly thrives in shade, it is commonly found with oak and beech, sometimes even taking over the area as the dominant species.

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Common holly is native to most of Western Europe but has proliferated in parts of North America including Canada, Hawaii and the west coast, where it’s now considered invasive.

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Holly leaf blight (Phytophthora ilicis) is a common threat leading to dieback – a pathogen that causes branches, twigs and roots to die.

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Prevalent in Jersey, common holly is among the native species we’ve planted in sections of the Railway Walk with our trusty volunteers.

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