Common Name   Latin Name Min Caliper Z M. Ht.
Class A - Large Size    
Deciduous Species    
 
Ash - Green   Fraxinus pennsylvanica 6 cm 2 12m
Ash - Black   Fraxinus nigra 6 cm 3 12m
Ash - Mancana   Fraxinus mandshurica 'Mancana' 6 cm 3 10m
Ash - Oak Leaf Mountain   Sorbus hybrida 6 cm 3 9m
Ash - Patmore   Fraxinus pennsylvanica 'Patmore' 6 cm 2 15m
Ash - Prairie Spire   Fraxinus pennsylvanica 'Rugby' 6 cm 2 15m
Aspen - Swedish (columnar)   Populus tremula 6 cm 2 12m
Aspen - Native (trembling)   Populus tremuloides 6 cm 2 10m
Birch - Paper (white)   Betula papyrifera 6 cm 2 12m
Birch - Chickadee   Betula papyrifera 'Chickadee' 6 cm 2 15m
Birch - Weeping Cutleaf   Betula pendula 6 cm 2 15m
Elm - American   Ulmus americana 6 cm 2 12m
Elm - Siberian   Ulmus pumila 6 cm 2 16m
Elm - Brandon   Ulmus americana 'Brandon' 6 cm 3 15m
Larch - Siberian   Larix sibirica 6 cm 2 12m
Linden - American , Basswood   Tilia americana 6 cm 2 15m
Linden - Dropmore   Tilia flavescens 'Dropmore' 6 cm 3 10m
Maple - Autumn Spire Red   Acer rubrum 'Autumn Spire' 6 cm 2 13m
Maple - Manitoba (Baron)   Acer negundo 6 cm 2 14m
Maple - Silver   Acer saccharinum 6 cm 3 16m
Maple - Northwood   Acer rubrum "Northwood' 6 cm 3 13m
Maple - Sugar   Acer saccharum 6 cm 3 15m
Maple - Unity Sugar Maple   Acer saccharum 'Unity' 6 cm 3 10m
Mayday - Advance   Prunus padus 'Advance' 6 cm 2 10m
Oak - Bur   Quercus marcrocarpa 6 cm 2 10m
Poplar - Assiniboine   Populus 'Assiniboine' 6 cm 2 15m
Poplar - Balsam   Populus balsamifera 6 cm  2 18m
Poplar - Northwest   Popullus x 'Northwest' 6 cm 2 20m
Poplar - Plains or Sargenti   Populus sargenti     (NATIVE) 6 cm 3 18m
Poplar - Tower   Populus x  canescens 'Tower' 6 cm 2 10m
Poplar - Tristis   Populus 'Tristis' 6 cm 2 15m
Willow - Niobe   Salix alba 'Niobe' 6 cm 3 15-21m
Willow - Silver Leaf   Salix alba sibirica 6 cm 3 10m
Willow - Northern Fountain   Salix 'Northern Fountain' 6 cm 3 10m
Willow - Laurel Leaf   Salix pentandra 6 cm 2 12m
Willow - Prairie Cascade Weep   Salix x 'Prairie Cascade' 6 cm 3 10m
     
Class A - Large Size        
Conifers Species        
Pine - Lodgepole (Native)   Pinus contorta latifolia 3 metres 2 12m
Pine - Limber (Native)   Pinus flexilis 3 metres 2 10m
Pine - Ponderosa   Pinus ponderosa 3 metres 2 12m
Pine - French Blue Scotch   Pinus sylvestris 'French Blue' 3 metres 3 12m
Pine - Swiss Stone   Pinus cembra 2 metres 3 10m
Spruce - Baby Blue   Picea pungens 'Baby Blue' 2 metres 2 18m
Spruce - Colorado   Picea pungens  2 metres 2 18m
Spurce - Hoopsii   Picea pungens 'Hoopsii' 2 metres 2 10m
Class B - Medium Size        
Deciduous Species        
Ash - American Mountain   Sorbus americana 5 cm 2 8m
Ash - European Mountain   Sorbus aucuparia 5 cm 3 9m
Ash - Black Hawk Mountain   Sorbus aucuparia 'Black Hawk' 5 cm 3 8m
Ash - Russian Mountain   Sorbus aucuparia 'Rossica' 5 cm 3 8m
Ash - Showy Mountain   Sorbus decora 5 cm 2 6m
Birch - Crimson Frost   Betula 'Crimson Frost' 5 cm 2 8m
Birch - River Birch (Native)   Betula occidentalis 5 cm 2 6m
Birch - Dakota Pinnacle    Betula platyphylla 'Fargo' 5 cm 2 7m
Catalpa - Chinese   Catalpa ovata 5 cm 2 8m
Cherry - Amur   Prunus maackii 5 cm 2 8m
Cherry- Amur Goldrush   Prunus maackii 'Jefree' 5 cm 2 7m
Chokecherry-Schubert - Bailey's Prunus virginiana 'Bailey Select' 5 cm 3 8m
Crabapple - Rudolph - flowering   Malus 'Rudolph' 5 cm 2 7m
Crabapple - Selkirk - flowering   Malus 'Selkirk' 5 cm 2 6m
Crabapple - Spring Snow - flwrg   Malus 'Spring Snow' 5 cm 3 6m
Crabapple - 'Makamik' - flwrg   Malus x 'Malamik 5 cm 2 8m
Hawthorn - Snowbird   Crataegus x mordenensis 'Snowbird' 5 cm 3 6m
Hawthorn - Toba   Crataegus x mordenensis 'Toba' 5 cm 3 6m
Linden - Little Leaf   Tilia cordata 5 cm 3 9m
Linden - Greenspire    Tilia cordata 'Greenspire' 6 cm 3 9m
Maackia - Amur   Maackia amurensis 5 cm 3 6m
Maple - Hot Wings Tartarian   Acer tataricum 'Gar Ann' 2 metres 3 6m
Maple - Ventura   Acer x 'Ventura' 2 metres 2 6m
Mayday - CVI   Prunus padus commutata 5 cm 3 8m
Olive - Russian   Elaeagnus angustifolia 5 cm 2 6m
Ohio Buckeye   Aesculus glabra  2 metres 3 9m
Serviceberry - Autumn Brilliance   Amerlanchier x grandiflora 2 metres 2 6m
Serviceberry - Robin Hill   Amerlanchier x grandiflora 2 metres 3 7m
     
Class B Medium        
Conifers Species        
     
Spruce - Bush's Lace Weeping   Picea engelmannii pendula 'Bush's Lace 2 metres 3 5m (S)
Spruce - Columnar Blue   Picea pungens 'Fastigiata' 2 metres 3 9-13m
Spruce - Bakeri   Picea pungens glauca 'Bakerii' 2 metres 2  
Spruce - Fat Albert   Picea pungens glauca 'Fat Albert' 2 metres 2 9-13m
Spruce - Morheim   Picea pungens 'Morheim' 2 metres 3 7m
Pine - Columnar Scotch   Pinus sylvestris 'Fastigiata' 2 metres 3 6m
     
Class B Medium cont'd        
Fruit Trees        
Apple - Battleford CVI   Malus 'Battleford' 2 metres 3 6m
Crabapple - Dolgo CVI   Malus 'Dolgo' 2 metres 2 6m
Apple - Goodland CVI   Malus 'Goodland' 2 metres 3 6m
Apple - Harcourt CVI   Malus 'Harcourt' 2 metres 3 6m
Apple - Heyer #12 CVI   Malus 'Heyer #12' 2 metres 3 6m
Apple - Parkland CVI   Malus 'Parkland' 2 metres 3 6m
Apple - Red Sparkle   Malus 'Red Sparkle' 2 metres 3 6m
Crabapple - Rescue CVI   Malus 'Rescue' 2 metres 3 6m
Apple - Westland CVI   Malus ' Westland' 2 metres 3 6m
Apricot - Westcot   Prunus 'Westcot' 2 metres 3 5m
Pear - Ussurian   Pyrus ussuriensis 2 metres 3 8m
Pear - Early Gold   Pyrus ussuriensis 'Early Gold' 2 metres 3 6m
Pear - Golden Spice   Pyrus ussuriensis ' Golden Spice' 2 metres 3 7m
     
Class C Small        
Deciduous Species        
     
Birch - Young's Weeping   Betula pendula 'Youngii' 5 cm 3 3m
Caragana - Sutherland   Caragana arborescens'Sutherland' 5 cm 2 5m
Crabapple - Almey - flowering   Malus 'Almey' 5 cm 3 5m
Chokecherry - Western   Prunus virginiana melanocarpa 5 cm 2 5m
Crabapple - Radiant - flowering   Malus 'Radiant' 5 cm 2 5m
Crabapple - Royalty - flowering   Malus 'Royalty' 5 cm 2 5m
Crabapple - Thunderchild - flwrg   Malus 'Thunderchild' 5 cm 2 5m
Larch - Weeping   Larix decidua 'Pendula' 5 cm 3 5m
Lilac - Golden Eclipse   Syringa reticulata 'Golden Eclipse' 5 cm 3 5-7m
Lilac - Japanese Tree   Syringa reticulata 5 cm 3 5m
Maple - Amur   Acer ginnala 2 metres 3 5m
Maple - Amur Clump   Acer ginnala 2 metres 3 5m
Maple - Tartarian   Acer tataricum 2 metres 3 5m
Mayday - Sweetheart   Prunus padus 'Sweetheart' 5 cm 2 5m
Plum - Princess Kay   Prunus nigra 'Princess Kay' 5 cm 2 5m
Pincherry Tree   Prunus pennsylvanica 5 cm 2 5m
     
Class C Small        
Fruit Trees        
Apple - Haralred   Malus 'Haralred' 5 cm 3 5m
Apple - Kerr CVI   Malus 'Kerr' 5 cm 3 3m
Apple - Multi-grafted   Malus multi-graft 5 cm 3 5m
Apple - Norlund CVI   Malus 'Norlund' 5 cm 2 5m
Apple - September Ruby CVI   Malus 'September Ruby' 5 cm 3 5m
Cherry - Evans Sour   Prunus cerassus 'Evans' 5 cm 3 3m
Plum - Mount Royal   Prunus 'Mount Royal' 5 cm 3 4m
Plum - Waneta CVI   Prunus americana 'Waneta' 5 cm 3 3-4m
Plum - Pembina   Prunus 'Pembina' 5 cm 3 5m
Plum - Pipestone CVI   Prunus 'Pipestone' 5 cm 3 3-4m
Plum - Brookgold CVI   Prunus salicina 'Brookgold' 5 cm 3 4m
Plum - Brookred CVI   Prunus salicina 'Brookred' 5 cm 3 4m
Plum - Toka CVI   Prunus 'Toka' 5 cm 3 4m
     
     
Class C Small        
Conifers Species        
     
Cedar - Brandon   Thuja occidentalis 'Brandon' 2 metres 3 4m
Cedar - Techny   Thuja occidentalis 'Techny' 2 metres 2 4m
Cedar - Siberian   Thuja occidentalis 'Wareana' 1 metre 2 3m
Juniper - Blue Point   Juniperus chinensis 'Blue Point' 1 metre 3 3m
Juniper - Blue Arrow   Juniperus scopulorum 'Blue Arrow' 2 metres 3 4m (S)
Juniper - Cologreen   Juniperus scopulorum 'Cologreen' 2 metres 3 4m (S)
Juniper - Medora   Juniperus scopulorum 'Medora' 1 metre 2 3m
Juniper - Moonglow   Juniperus scopulorum 'Moonglow' 2 metres 3 4m
     
Juniper - Tolleson's Blue Weepg   Juniperus scopulorum 'Tolleson's Blue' 2 metres 2 4m
Juniper - Wichita Blue   Juniperus scopulorum 'Wichita Blue' 2 metres 2 4m (S)
Juniper - Wichita Blue Spiral   Juniperus scopulorum 'Wichita Blue' 2 metres 2 4m (S)
Spruce - Montgomery   Picea pungens glauca 'Montgomery' 2 metres 2 4m
Pine - Bristlecone   Pinus aristata 2 metres 2 4m
Pine - Mugo Pine   Pinus mugo mughus 2 metres 2 4m
Pine - Mugo T/G   Pinus mugo mughus 2 metres 2 4m (S)
Pine - Weeping White   Pinus strobus pendula 2 metres 2 3-6m
Pine - Water's Scotch Topiary   Pinus sylvestris 'Watereri' 2 metres 3 4m (S)
For the minium size column
reference in cm is a measure
ment of trunk diameter 15 cm
above the ground
Reference in metres is a
measurement of height above
the ground
In the mature height column
Reference with an 'S' is for
specialty trees