This is a Cultivar of "Sourwood", With a light colored margin on the leave(s)
Can't seem to find it ANYwhere !
https://duckduckgo.com/?q=Oxydendrum+Arboreum+%22Albmarginatum%22+price&t=ffcm&ia=web
if you dont tell us where you are.. big city name.. i cant narrow it down any further ...
ken
NYC
May help if looking under the correct spelling of the cultivar name....'Albomarginatum'..
I don't see where anyone in the US is growing or marketing this variety..
Cliff DietrichOriginal Author
ken_adrian Adrian MI cold Z5
Cliff DietrichOriginal Author
gardengal48 (PNW Z8/9)