Spider mites sound like a good possibility. However, in fairness to my
good friends the thrips, when they feed, they scrape the leaf surface,
leaving it a silvery color, then excrete green... er.... spots on the
leaves. So washing the foliage is a good idea, but so is constant
vigilance! Thrips are difficult to control.

Honey locusts might make good bonsai- I'm sure somebody on the list (Hud?)
had one. But they are suceptible to a lot of pests and pathogens.

When you repot, don't be alarmed by the nodules on the roots; locusts,
like any legume, have symbiotic nitrogen-fixing bacteria.

-Nina

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