Advice: Trees for shady spots
There are very few trees which will tolerate deep shade since their instincts are to grow up to the light. However, since most gardens have shady spots the trees which will thrive there are especially valuable.
Acer........................palmatum and cultivars
Cedrela..........................sinensis 'Flamingo'
Cornus..................mas and mas 'Variegata'
Forsythia..................x intermedia 'Lynwood'
Hamamelis...........................................(all)
Ilex.........................aquifolium and cultivars
Prunus................laurocerasus and cultivars
Prunus.....................lusitanica and cultivars
Taxus...................................................(all)