How soon should I transplant this years' bench grafts

Last year I got 5 bench grafts and transplanted them in mid June as they grew in the buckets. They did well and are growing nicely. Did I get lucky, is there a better way? This year I did my own and as they grow when should I transplant? that wasn’t very clear. My bench grafts from last year are growing well this year.

If you have permanent homes for them or a garden no reason not to plant them in the ground as soon as the threat of frost has passed. All of my bench grafts are allowed to callus inside and then planted directly into the nursery. Just keep them protected from critters and adequately watered.