a clean strain of phalaris would be worth investing into.
there are some cold-hardy acacias as well...
as far as growing malpighiaceae or other tropical plants in the cold, i would consult jamie... i just said eff it and moved to maui
ololiuqui can be grown indoors in cold climate.
i think morning glories can be grown as an outdoor annual (probably best to start them indoors before the warmth of spring comes, so you can put them outside after the last frost).
salvia can be grown indoors just about anywhere, afaik (i believe anywhere you can get coleus to survive will be a proper environment for salvia)
peganum harmala will probably tricky (if possible) to keep alive.
you could probably cultivate fungus teachers fairly easily
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