Particular foliages

Some species and varieties have a particular color of foliage, which is more a criterion for choosing an original tree, than an index of recognition (for uncommon trees).

The coloration of the foliage in autumn is a complex physiological phenomenon. A mild and rainy autumn reduces the range of bright colors, indeed the lack of sunlight and cool nights (remember the fall in the Nordic countries, Canada), reduced sugar production, a key factor in the coloration (a phenomenon similar to fruit).
red - deciduous trees
Most maples: Acer ginnala, grosseri " Hersii ", palmatum, pennsylvanicum, rubrum, platanoides " Reitenbachii"
Blood dogwood, Cornus mas
Sumac, (yellow then red) Rhus typhina
Sweetgum, Liquidambar styraciflua
Persian Ironwood, (red and yellow) Parrotia persica

Wild Cherry, (yellow then red) Prunus avium
Pin Oak, Quercus borealis, coccinea, palustris, rubra, tinctoria
Sassafras, Sassafras officinal
yellow - deciduous trees
Amur cork tree, Phellodendron amurense
Birch, Betula
Cedrela, Cedrela sinensis (to the right)
Kentucky Coffee Tree, Gymnocladus dioicus
Silver maple, Acer saccharinum
Hedge Maple, Acer campestris
Negundo maple, Acer negundo " variegatum " (from September)
Norway Maple, Acer platanoïdes
Ash, Fraxinus excelsior " aureovariegata " (from September)
Beech, (copper-coloured) Fagus sylvatica
Katsura, Cercidiphyllum japonicum
Elm of the Caucasus, Zelkova carpinifolia
Poplars, Populus
Blacklocust tree, Robinia pseudoacacia
Varnish Tree, Koelreuteria paniculata (yellow with red)
Japanese Pagodatree
Tulip tree, Liriodendron tulipifera
Yellowwood, Cladrastis lutea
No autumn color
Tree of Heaven, Ailanthus altissima
Silk Tree julibrissin
Alder, Alnus
Spanish chestnut, Castanea sativa (yellow shortly, then brown)
Laburnum aubour, Laburnum vulgare
Ash, Fraxinus excelsior
Walnut, Juglans
Russian Olive, elaeagnus angustifolia

Red conifers (rufous)
Japanese Cryptomeria, Cryptomeria japonica " elegans"
Baldcypress, Taxodium distichum

Yellow Conifers
Ginkgo biloba (bright yellow)
Larch, Larix



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