Harlequin maple – leaves not variegated

Our harlequin maple is 25 years old and has always been beautiful with green and yellow outline leaves. We know know to remove entire green leaves so the whole tree doesn’t become green leaves. This season (we live in Ottawa)…

Harlequin Maple

My 20-ish year old Harlequin Maple has about 20% of its leaves 100% white/yellow. They look healthy, the tree looks healthy but It has never had all white/yellow leaves before. Does it need anything??? is this normal????…