Answer: You could take tip cuttings of impatiens and coleus and grow them as houseplants on a sunny windowsill. The others do not seem to do at all well indoors. Often, the annuals bloom so much during the summer that they are exhausted by late fall. Indoors in the low light levels of winter, they do not perform as well as they do outside. And by spring they tend to be leggy and weak. So you will probably want to replace them by then.
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