Q: I have an old indoor corn plant that won’t die but doesn’t look healthy. I’ve tried various things but I’m not sure how to save it.
A: My first instinct would be to toss it, but I know houseplants can have emotional connections far beyond their intrinsic worth. I surmise that is your situation. In most cases the best way to rejuvenate a corn plant is to cut it down to a foot high and put it outside in semi-shade when warm weather arrives in spring. The increased light outdoors will stimulate new growth on the stem. I am sure it would also appreciate being repotted into fresh soil.