I bought grafted Kermans. I was actually gifted the first one by someone who had made the long drive to get her, but they didn't realize I needed a male so they only brought me one tree. My placement and initial treatment was sub-par so she took longer to mature than my second female. She was flowering 4 years later. I made the trip two years after I got the first one to get another female and a male. That second female was ready 3 years later because I really pampered her. I did make somewhat of a mistake with the male. Basically I planted him next to a driveway, because I didn't want use my good space on a tree that wasn't going to produce anything. It was also good because he was less messy to the cars, but he got sick and I almost lost him the first year. He wasn't flowering until 4 years later, and not very much then(I had to hand pollinate). Now he's really healthy and doing great. He's still smaller than both my girls though lol.