does anyone know of an indoor bonsai that can cope in shadier conditions?

Chris,
As already mentioned, there are several species that will live inside
year round: most of the ficus species, jade plant, scheffelera, and
some others. These are tropical plants that can't tolerate cold temps,
however, they will do better if you put them outside in the summer.
Temperate species (most bonsai) require a dormant period in the
winter and can't survive inside long term. As Iris has pointed out, if you
just put a tropical species on a window sill and leave them inside all the
time you won't get optimal growth. The tree will cope with low light by
producing fewer, larger leaves with long gaps between the leaves.
Tthis won't give you the proportions of a tree in miniature. It's quite
easy to keep these species alive inside, just be aware you won't get a
high quality bonsai. However, just putting them outside won't
gaurantee a high quality specimen either. Adding artificial lights and a
humidifier may help a bit, but still not as good as outside. If you live in
an apartment or something it's tough but not impossible to get into
bonsai. Give it a try, if you get bitten by the bonsai bug you can buy a
yard (with a house attached) later. If not, you will have some
houseplants. Don't be put off by negative comments, they're just little
trees in pots.
Good luck,
John Carnes

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