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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
1Sequoiadendron giganteum (Giant sequoia)9.95 mPowerscourt House & Gardens, Enniskerry, Ireland Leo Goudzwaard2014
2Cupressus macrocarpa (Monterey cypress)9.90 mClontra House, Shankill, IrelandTheTreeRegisterOwenJohnson2010
3Pinus radiata (Monterey pine)9.14 mCollis Sands House, Tralee, IrelandTheTreeRegisterOwenJohnson2010
4Quercus robur (Pedunculate oak)8.57 mKing Oak, Charleville Forst, Ireland Maarten Windemuller2013
5Sequoia sempervirens (Coast redwood)8.30 mWoodstock Gardens, Inistioge, Ireland Leo Goudzwaard2014
6Acer pseudoplatanus (Sycamore maple)7.90 mGolf club "The Druids Glen Course", Kilcoole, Ireland Maarten Windemuller2013
7Thuja plicata (Western redcedar)7.37 mWoodlawn House, Woodlawn, IrelandTheTreeRegisterOwenJohnson2010
8Eucalyptus globulus (Tasmanian blue gum)7.01 mEccles Hotel, Glengarriff, IrelandTheTreeRegisterOwenJohnson2010
9Eucalyptus johnstonii (Tasmanian yellow gum)6.92 mBallynestragh estate, Gorey, IrelandTheTreeRegisterOwenJohnson2010
10Picea sitchensis (Sitka spruce)6.75 mPowerscourt House & Gardens, Enniskerry, IrelandAubrey Fennell2014
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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
2Picea sitchensis (Sitka spruce)55.00 mPowerscourt House & Gardens, Enniskerry, IrelandLeo Goudzwaard2014
3Sequoiadendron giganteum (Giant sequoia)50.00 mPowerscourt House & Gardens, Enniskerry, IrelandLeo Goudzwaard2014
4Tsuga heterophylla (Western hemlock)50.00 mAvondale Forest Park, Rathdrum, IrelandLeo Goudzwaard2014
5Abies alba (European silver fir)48.30 mAvondale Forest Park, Rathdrum, IrelandLeo Goudzwaard2014
6Thuja plicata (Western redcedar)45.40 mPowerscourt House & Gardens, Enniskerry, IrelandLeo Goudzwaard2014
7Eucalyptus johnstonii (Tasmanian yellow gum)45.40 mAvondale Forest Park, Rathdrum, IrelandLeo Goudzwaard2014
8Eucalyptus globulus (Tasmanian blue gum)44.00 mKilruddery, Bray, IrelandTheTreeRegisterOwenJohnson2010
9Populus × canadensis (Canadian poplar)42.70 mRiver Barrow at Borris Lock, Borris, IrelandLeo Goudzwaard2014
10Sequoia sempervirens (Coast redwood)42.60 mWoodstock Gardens, Inistioge, IrelandLeo Goudzwaard2014
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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
4Abies alba (European silver fir)244 yAvondale Forest Park, Rathdrum, IrelandLeo Goudzwaard2014
5Pinus pinaster (Maritime pine)244 yCurraghmore, Portlaw, IrelandTheTreeRegisterOwenJohnson2013
6Cupressus lusitanica (Mexican cypress)205 yKilmacurragh Arboretum, Rathdrum, IrelandTheTreeRegisterOwenJohnson2013
7Araucaria araucana (Monkey-puzzle)171 yLough Fea House, Carrickmacross, IrelandTheTreeRegisterOwenJohnson2013
8Sequoia sempervirens (Coast redwood)166 yWoodstock Gardens, Inistioge, Ireland TheTreeRegisterOwenJohnson2013
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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