Hagen concept Acer campestre Berberis thunbergii ‘Atropurpurea” Berberis thunbergii Buxus sempervirens Carpinus betulus Crataegus monogyna Fagus sylvatica ‘Atropunicea’ Fagus sylvatica Ligustrum ovalifolium Ligustrum vulgare ‘Atrovirens’ Prunus laurocerasus ‘ Rotundifolia’ Taxus baccata