We’ve talked about it before, but the first year the newly transplanted trees tend to sleep, year 2 they creep, and year 3 they leap. That first year they’re undergoing shock of being moved and are just trying to stay alive. That’s why it’s not a good idea to fertilize. Year 2 they start getting their footing with good rooting. In response you get a little bit of top growth. Year 3 they’re getting near fully established and you’ll get the top growth to match the rooting spread.