My little Australian finger lime took the cold pretty good versus most of my subtropicals which took a beating this winter (minus the white sapotes, tree tomato and surinam cherry. I'm pretty sure my coco cream mango and Alano sap are dead). I was wondering if I can graft finger lime scions onto my lemon trees? From what I understand they are normally on a dwarf rootstock and will never get above 6 feet. But the finger lime isn't a true citrus right? So is there any chance of success grafting them on a regular citrus tree?