This may be cultivar dependent but noticing new growth on Mac is more vigor than Old Wood
New shoots on Mac - anywhere from 1/3 to 1/2 in height to *old wood*. Leaves are full size grown
Whereas Old Wood, most leaves are 2" to to maybe , just maybe 3-4" large. Still very small.....
Never did pay a keen eye to this but noticed it this year.
Do you guys see the same on new wood/vs old wood during spring/initial non dormant waking up growth