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The thickest, tallest, and oldest trees in Ireland

By province

Girth

In this table of girth records in Ireland only girth measurements made at a height between 1.30 m and 1.50 m are listed. Trees with multiple trunks are excluded.
Of course this inventory contains only tree records as far as they are registered on this site.

How to measure the girth of a tree?

NrTree speciesGirthLocationMeasurementYear
1Cupressus macrocarpa (Monterey cypress)9.90 mClontra House, Shankill, IrelandTheTreeRegisterOwenJohnson2010
2Pinus radiata (Monterey pine)9.14 mCollis Sands House, Tralee, IrelandTheTreeRegisterOwenJohnson2010
3Quercus robur (Pedunculate oak)8.57 mKing Oak, Charleville Forst, Ireland Maarten Windemuller2013
4Sequoia sempervirens (Coast redwood)8.20 mWoodstock Gardens, Inistioge, Ireland TheTreeRegisterOwenJohnson2010
5Acer pseudoplatanus (Sycamore maple)~7.38 mGolf club "The Druids Glen Course", Kilcoole, Ireland Maarten Windemuller2010
6Thuja plicata (Western redcedar)7.37 mWoodlawn House, Woodlawn, IrelandTheTreeRegisterOwenJohnson2010
7Sequoiadendron giganteum (Giant sequoia)7.15 mPowerscourt House & Gardens, Enniskerry, Ireland Maarten Windemuller2013
8Eucalyptus globulus (Tasmanian blue gum)7.01 mEccles Hotel, Glengarriff, IrelandTheTreeRegisterOwenJohnson2010
9Eucalyptus johnstonii (Tasmanian yellow gum)6.92 mBallynestragh estate, Gorey, IrelandTheTreeRegisterOwenJohnson2010
10Cedrus deodara (Deodar cedar)6.60 mK Club, Straffan, IrelandTheTreeRegisterOwenJohnson2010
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Height

In this table of height records in Ireland only height measurements made by laser (like eg. the Nikon 550 Forestry) or tape drop are listed.
Of course this inventory contains only tree records as far as they are registered on this site.

How to measure the height of a tree?

NrTree speciesHeightLocationMeasurementYear
1Pseudotsuga menziesii (Coast Douglas-fir)61.50 mPowerscourt House & Gardens, Enniskerry, IrelandTheTreeRegisterOwenJohnson2013
2Eucalyptus globulus (Tasmanian blue gum)44.00 mKilruddery, Bray, IrelandTheTreeRegisterOwenJohnson2010
3Populus × canadensis (Canadian poplar)44.00 mRiver Barrow at Borris Lock, Borris, IrelandTheTreeRegisterOwenJohnson2010
4Fraxinus excelsior (Common ash)40.00 mMarlfield Farm, Clonmel, IrelandTheTreeRegisterOwenJohnson2010
5Sequoiadendron giganteum (Giant sequoia)35.20 mPowerscourt House & Gardens, Enniskerry, Ireland Maarten Windemuller2013
6Quercus robur (Pedunculate oak)32.00 mB&B Oak House, Mountshannon, Ireland Maarten Windemuller2013
7Fagus sylvatica (European beech)29.80 mBirr Castle Demesne, Birr, Ireland Maarten Windemuller2013
8Acer pseudoplatanus (Sycamore maple)23.60 mGolf club "The Druids Glen Course", Kilcoole, Ireland Maarten Windemuller2013
9Pinus radiata (Monterey pine)22.20 mMuckross House, Killarney, Ireland Maarten Windemuller2013
10Cupressus macrocarpa (Monterey cypress)22.00 mEmo Court, Emo, Ireland Maarten Windemuller2013
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Age

In this table of age estimates and measurements in Ireland are shown. Of course this inventory contains only age records as far as they are registered on this site.

NrTree speciesAgeLocationMeasurementYear
1Taxus baccata (Yew)670 yMuckross Friary, Killarney, Ireland TheTreeRegisterOwenJohnson2013
2Quercus ilex (Holm oak)374 ± 8 yCourtown House, Gorey, IrelandTheTreeRegisterOwenJohnson2013
3Juglans regia (Persian walnut)254 ± 5 ySt. Maelruan’s Tree, St Mary's Priory, Ireland Maarten Windemuller2013
4Pinus pinaster (Maritime pine)244 yCurraghmore, Portlaw, IrelandTheTreeRegisterOwenJohnson2013
5Cupressus lusitanica (Mexican cypress)205 yKilmacurragh Arboretum, Rathdrum, IrelandTheTreeRegisterOwenJohnson2013
6Araucaria araucana (Monkey-puzzle)171 yLough Fea House, Carrickmacross, IrelandTheTreeRegisterOwenJohnson2013
7Sequoia sempervirens (Coast redwood)166 yWoodstock Gardens, Inistioge, Ireland TheTreeRegisterOwenJohnson2013
8Cedrus libani (Lebanon cedar)164 ± 50 yWoodstock Gardens, Inistioge, Ireland Martin Tijdgat2013
9Cryptomeria japonica (Sugi)164 ± 50 yWoodstock Gardens, Inistioge, Ireland Martin Tijdgat2013
10Abies procera (Noble fir)164 ± 50 yNoble fir lane, Woodstock Gardens, IrelandMartin Tijdgat2013
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