'San Zanobi' is a fastigiate, often monopodial tree with upright branching bearing glabrous, bright green leaves < 15 cm  long × < 6 cm broad.
Like its compatriot 'Plinio', the tree lacks striking autumn colours, the leaves remaining green almost until they fall in late November.
 In Italy, 'San Zanobi' begins flowering in its fifth year (sixth in the UK), and can begin suckering from roots at about the same age.
The perfect, apetalous wind-pollinated flowers appear in mid March in the UK.
The sessile samarae are ovate, 15 × 18 mm.
'San Zanobi' is a fastigiate, often monopodial tree with upright branching bearing glabrous, bright green leaves < 15 cm  long × < 6 cm broad. Like its compatriot 'Plinio', the tree lacks striking autumn colours, the leaves remaining green almost until they fall in late November.  In Italy, 'San Zanobi' begins flowering in its fifth year (sixth in the UK), and can begin suckering from roots at about the same age. The perfect, apetalous wind-pollinated flowers appear in mid March in the UK. The sessile samarae are ovate, 15 × 18 mm.
Ulmus 'San Zanobi'