dwarf schefflera arboricola

pikemaster64

I could bet you $10 you got it from Fuku Bonsai.
Anyway, I think you should plant it out of that rock and into a pot, then allow it to grow out. Whether you want to get rid of the heavy branches depends on how you want this tree to end up. If you want a wide, low crown, you'll probably want to keep most of the branches. If you want a higher crown, go ahead and hack off the low, heavy branches (after letting it grow out).

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Working toward a more naturalistic view of bonsai, one literati at a time.