I purchased a new maple last year in a 3ltr pot, Acer palmatum ' Higasayama'. It is the first one of this cultivar I've had. It has buds, but compared to all my other maples it is not showing good swelling to date (17th March) 2020. Does anybody else have a similar experience with this cultivar? ie, is it late to leaf out. I have attached a photo of a branch. Any thoughts would be appreciated.