Species Identification:
https://en.wikipedia.org/wiki/Ulmus_minor

https://dryades.units.it/scuole/index.php?procedure=taxon_page&id=281&num=2876

Horticultural information: 

https://bonsai4me.com/speciesguides/ulmus-elm-bonsai/

This specimen information:

Grown from seed,

repotted in January '24

Substrates: Peat Moss+Pumice+Zeolite+Lava rock

If you liked it, please check out the other trees in my shop:

https://www.ebay.it/usr/luvala-99?_trksid=p4429486.m3561.l2559