Ok, think I understand. Both Gumbos with work fine. They do have medium large frilly flowers so one would want a larger composition to make space for the flowers… and also prune until the buds are spaced out.
@johng azaleas, of course will work fine. Eikan larger composition. Wakamatsu is a cultivar not familiar with.
Wait until most frost is past, or plan to bring the trees inside the garage during nightly frosts. We are just starting azalea work out here. Having just come back from Osk Ridge TN last week, I’d say likely you are fine starting now given the trees are protected at night. The window will close by the end of April, depending on the high temperatures then and where the azaleas will reside. A good morning sun afternoon strongly dappled shade or bright shade.
likely a 6 or a 7” tokoname training pot, just a guess. Azaleas like deeper pots then most bonsai.
cheers
DSD sends
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