Tree Eco Ratings Table
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Top Trunks Guide All trees are great environmental contributors so whether they are an ‘A’ or an ‘E’ rating they are all doing their bit to lock up carbon by taking carbon dioxide out of the air and converting it into their structures. Barcham Top Trunks gives a guide to the extent carbon is stored per variety. The measurement is estimated dry weight carbon at maturity so the longer a tree lives and the larger it gets the more contribution it delivers. We are the first nursery to score trees in this way, using data from thousands of trees throughout the UK via the measuring tool ‘I Tree’. Many of these trees are either urban trees or trees near buildings in rural locations so we estimate that trees with greater access to space and soil volumes in the wider countryside could store up to three times the volumes shown here. As yet the measuring systems in place for calculating carbon load are still in their infancy. The carbon locked up below ground in root systems may contribute as much as what we have calculated above ground. What we know for sure is that trees are a great way for our species to help redress the threat of our time, global warming. The modelling we have used for this study has an abundance of data at genus and species level but we grow a wide range of trees and there was insufficient data to cover all cultivars. With these more obscure varieties we have estimated their eco ratings, taking into account their ultimate size and lifespan compared to their species. LIFE LIFE CARBON CARBON KEY: VARIETY EXPECTANCY EXPECTANCY CREDIT SCORE STORED AT (URBAN) (RURAL) (A-E) MATURITY (KG) Abies nordmanniana 150 300 B 4324 Acer negundo 50 75 B 2498 Abies fraseri 150 300 B 4324 Acer negundo Flamingo 25 50 B 2498 Abies grandis 150 300 B 4324 Acer negundo Variegatum 50 75 B 2498 Abies koreana 150 300 B 2556 Acer palm Dissectum Garnet 50 100 C 514 Abies procera 150 300 B 3045 Acer palmatum 50 100 C 514 Acacia dealbata 15 35 D 458 Acer palmatum Atropurpureum 50 100 C 514 Acca sellowiana 15 35 D 90 Acer palmatum Bloodgood 50 100 C 514 Acer buergerianum 50 100 C 1174 Acer palmatum Dissectum Garnet 50 100 C 514 Acer campestre 150 250 B 2572 Acer palmatum Fireglow 50 100 C 514 Acer campestre Arends 150 250 B 2572 Acer palmatum Osakazuki 50 100 C 514 Acer campestre Elegant 150 250 B 2572 Acer palmatum Purpurea 50 100 C 514 Acer campestre Elsrijk 150 250 B 2572 Acer palmatum Red Emperor 50 100 C 514 Acer campestre Lienco 150 250 B 2572 Acer platanoides 150 250 A 7250 Acer campestre Louisa Red Shine 150 250 B 2572 Acer platanoides Cleveland 150 250 B 4895 Acer campestre Nanum 50 75 C 1796 Acer platanoides Columnare 150 250 B 4895 Acer campestre Queen Elizabeth 150 250 B 2572 Acer platanoides Crimson King 150 250 B 4895 Acer campestre Streetwise 150 250 B 2572 Acer platanoides Crimson Sentry 150 250 C 990 Acer campestre William Caldwell 150 250 B 2572 Acer platanoides Deborah 150 250 B 7500 Acer cappadocicum 75 150 B 2572 Acer platanoides Drummondii 150 250 B 4895 Acer cappadocicum Aureum 75 150 B 2572 Acer platanoides Emerald Queen 150 250 A 7250 Acer cappadocicum Rubrum 75 150 B 2572 Acer platanoides Fairview 150 250 B 4895 Acer x freemanii Armstrong 75 150 C 628 Acer platanoides Farlakes Green 150 250 A 7250 Acer x freemanii Autumn Blaze 75 150 C 628 Acer platanoides Globosum 150 250 C 990 Acer x freemanii Autumn Fantasy 75 150 C 628 Acer platanoides Olmstead 150 250 B 4895 Acer ginnala 50 100 C 1040 Acer platanoides Pacific Sunset 150 250 B 4895 Acer griseum 75 150 C 628 Acer platanoides Princeton Gold 150 250 B 4895 332 Time for Trees | Edition 4 LIFE LIFE CARBON CARBON VARIETY EXPECTANCY EXPECTANCY CREDIT SCORE STORED AT KEY: (URBAN) (RURAL) (A-E) MATURITY (KG) Acer platanoides Royal Red 150 250 B 4895 Acer platanoides Summershade 150 250 B 4895 Acer pseudoplatanus 150 250 A 7500 Acer pseudoplatanus Brilliantissimum 150 250 C 1250 Acer pseudoplatanus Leopoldii 150 250 B 4895 Acer pseudoplatanus Negenia 150 250 A 7500 Acer pseudoplatanus Spaethii 150 250 B 4895 Acer pseudoplatanus Worleei 150 250 B 4895 Acer rubrum 75 150 B 3676 Acer rubrum Bowhall 75 150 B 3676 Acer rubrum October Glory 75 150 B 3676 Acer rubrum Red Sunset 75 150 B 3676 Acer rubrum Scanlon 75 150 B 3676 Acer saccharinum 100 200 B 4891 Acer saccharinum Laciniata Wieri 75 150 B 4891 Acer saccharinum Pyramidale 75 150 B 4891 Acer x freemanii Celebration 75 150 C 628 Aesculus californica 150 300 A 5276 Aesculus x carnea Briotti 150 300 A 5071 Betula maximowicziana 50 100 C 3224 Aesculus x carnea Plantierensis 150 300 A 5071 Betula nigra 50 100 B 3224 Aesculus flava 150 300 A 5276 Betula papyrifera 50 100 B 3224 Aesculus hippocastanum 200 300 A 7440 Betula pendula 75 100 B 3224 Aesculus hippocastanum Baumannii 150 300 A 5276 Betula pendula Crispa 50 100 B 3224 Aesculus indica 150 300 A 7051 Betula pendula Dalecarlica 50 100 B 3224 Ailanthus altissima 50 100 A 5138 Betula pendula Fastigiata 50 100 B 3224 Albizia julibrissin Rouge de Tuiliere 15 25 E 44 Betula pendula Obelisk 50 100 B 3224 Albizia julibrissin Tropical Dream 15 25 E 44 Betula pendula Purpurea 50 100 B 3224 Alnus cordata 75 100 B 2762 Betula pendula Royal Frost 50 100 B 3224 Alnus glutinosa 75 100 B 2762 Betula pendula Tristis 50 100 B 3224 Alnus glutinosa Imperialis 50 75 B 2762 Betula pendula Westwood 50 100 B 3224 Alnus glutinosa Laciniata 50 75 B 2762 Betula pendula Youngii 50 100 B 3224 Alnus incana 75 100 B 2762 Betula pendula Zwisters Glory 50 100 B 3224 Alnus incana Aurea 50 75 B 2762 Betula pubescens 50 100 B 3224 Alnus incana Laciniata 50 75 B 2762 Betula ut. Jacquemontii Doorenbos 50 100 B 3224 Alnus spaethii 75 100 B 2762 Betula utilis Grayswood Ghost 50 100 B 3224 Amelanchier arborea Robin Hill 25 50 C 530 Betula utilis Jac Snow Queen 50 100 B 3224 Amelanchier Ballerina 25 50 C 530 Broussonetia papyrifera 50 100 D 310 Amelanchier Lamarckii 25 50 C 530 Calocedrus decurrens 350 750 A 5178 Aralia elata 25 50 D 264 Camelia sasanqua Kanjiro 50 100 C 616 Araucaria araucana 250 750 B 2230 Camellia japonica Half Std 50 100 C 616 Arbutus unedo 150 300 D 406 Camellia sasanqua 50 100 C 616 Betula albosinensis Fascination 50 100 B 3224 Camellia sasanqua cleopatra 50 100 C 616 Betula ermanii 50 100 B 3224 Carpinus betulus 150 300 A 6731 Telephone 01353 720 748 | www.barcham.co.uk | www.barchampro.co.uk 333 LIFE LIFE CARBON CARBON KEY: VARIETY EXPECTANCY EXPECTANCY CREDIT SCORE STORED AT (URBAN) (RURAL) (A-E) MATURITY (KG) Carpinus betulus Fastigiata 150 250 A 6731 Carpinus betulus Frans Fontaine 150 250 A 6731 Carpinus betulus Lucas 150 250 A 6731 Carpinus japonica 150 250 C 698 Carya cordiformis 75 150 B 4047 Carya illinoinensis 150 300 A 7500 Castanea sativa 150 300 A 6854 Catalpa bignonioides 50 100 B 2859 Catalpa bignonioides Aurea 50 100 C 1420 Catalpa bignonioides Bungei 50 75 C 1420 Cedrus atlantica 200 300 B 3476 Cedrus atlantica Glauca 150 300 B 3476 Cedrus deodara 150 300 B 2107 Cedrus deodara Aurea 150 300 B 2107 Corylus avel. Zellernuss multi-stem 50 75 B 2762 Cedrus libani 150 300 A 5178 Corylus colurna 50 75 B 2762 Celtis australis 150 200 A 5240 Corylus colurna Teterrra Red 50 100 C 1454 Celtis occidentalis 150 200 A 7115 Cotinus coggygria Royal Purple 35 75 D 108 Cephalotaxus harr. Fastigiata 50 100 D 61 Cotoneaster Cornubia 25 50 D 110 Cercidiphyllum japonicum 75 150 B 1287 Crataegus laevigata Alba Plena 75 150 C 509 Cercis Chinensis Avondale multi-stm 35 75 C 601 Crataegus laevigata Paul's Scarlet 75 150 C 509 Cercis canadensis Forest Pansy 35 75 D 112 Crataegus x lavallei 75 150 C 509 Cercis siliquastrum 35 75 C 601 Crataegus x lavallei Carrierei 75 150 C 509 Cercis siliquastrum Alba 35 75 C 601 Crataegus monogyna 75 150 C 509 Chamaecyparis law.Columnaris Glauca 75 150 C 852 Crataegus monogyna Alboplena 75 150 C 509 Chamaecyparis lawsoniana Stardust 75 150 C 852 Crataegus monogyna Stricta 75 150 C 509 Chamaecyparis lawsoniana Yvonne 75 150 C 852 Crataegus x prunifolia 75 150 C 509 Chitalpa Summer Bells 25 50 D 294 Crataegus x prunifolia Splendens 75 150 C 509 Cladrastis kentukea 50 100 D 322 Cryptomeria japonica Elegans 150 300 B 4339 Clerodendrum tric. Purple Blaze 25 50 D 148 Cunninghamia lanceolata 250 500 B 3609 Clerodendrum trichotomum 25 50 D 148 Cupressus arizonica Glauca 50 100 B 2238 Cornus alba Sibirica 35 75 D 292 Cupressus macrocarpa Goldcrest 50 100 B 2238 Cornus controversa 50 100 D 111 Cupressus sempervirens 350 750 B 3463 Cornus controversa Variegata 50 100 D 214 Cupressus semp. Pyramidalis 350 750 B 3463 Cornus Eddie's White Wonder 50 100 D 214 Cupressocyparis leylandii 100 150 B 2245 Cornus kousa 50 100 D 214 Cupressocyparis ley.Castlewellan 50 100 B 2245 Cornus kousa China Girl 50 100 D 214 Cydonia oblonga (fruiting varieties) 15 25 D 99 Cornus kousa Chinensis 50 100 D 214 Davidia involucrata 35 75 D 103 Cornus kousa Milky Way 50 100 D 214 Diospyros lotus 50 75 C 541 Cornus kousa Stella Pink 50 100 D 214 Diospyros kaki 50 75 C 541 Cornus mas 50 100 D 111 Eucalyptus debeuzevillei 150 250 A 6433 Cornus sanguinea Annie's Winter Orange 50 100 D 214 Eucalyptus gunnii 150 250 A 7570 Corylus avellana Contorta 50 100 C 1454 Eucalyptus niphophila 150 250 A 7570 Corylus avellana multi-stem 50 75 B 2762 Eucommia Ulmoides 100 200 C 607 334 Time for Trees | Edition 4 LIFE LIFE CARBON CARBON VARIETY EXPECTANCY EXPECTANCY CREDIT SCORE STORED AT KEY: (URBAN) (RURAL) (A-E) MATURITY (KG) Euodia hupehensis 25 50 C 571 Euonymus europaeus Red Cascade 50 100 C 527 Exochorda serratifolia Snow White 50 100 D 219 Fagus orientalis Iskander 150 300 A 7008 Fagus sylvatica 200 300 A 7500 Fagus