Ooh! I feel I may have misspoke... They are of the same development.. they just DIDN'T get up-potted .. more like a handful (6-8) that I "selected" and am leaving in smaller pots one more year...
They're all going to be the same "age".
But I did start about 10 cuttings from the selects... So my fully rotating young/pre bonsai potentilla stock is about 3/4 seasons out (If I decide to push in this direction for this plant)
I LOVE potentilla and would be happy to keep you informed of WHEN I have WHAT (even those personal select ones).
I surprisingly got very little interest... I was even debating whether or not to attempt to build that particular stock.
(Either way) We will have at least 3 smaller "rounds" of potentilla in the pipeline.. so I will keep you in the loop.
Also I saw some decent nursery stock vine maple on Ebay, added somewhat recently.