,, nigra (Black Poplar).
Prunus Avium, cerasifera (Cherry Plum).
,, Mahaleb.
,, Padus (Bird Cherry).
,, Pissardi (Purple-leaved Plum).
Pyrus Aria (White Beam tree).
,, prunifolia (Siberian Crab).
,, Sorbus (Service tree).
Quercus Cerris (Turkey Oak). Good loam suits this best.
,, Ilex (Evergreen or Holm Oak).