Castanea sativa 'Marradi'

https://www.denolf.com/plantguide/casmarad-castanea-sativa-marradi-178694 https://www.denolf.com/web/image/plant.info/178694/image_1920?unique=5b184cf

Deep blue flowers with golden/yellow leaves. A combination which rarely occurs. Sunshine Blue flowers from August to September.