Check for spider mites.

How long has it been since you've repotted your plants? Even if they don't have to be moved up into a larger container, typical potting medium collapses in a relatively short time, and becomes a source of stress for your plants.

Also, I'd like to encourage you to ditch the fertilizer sticks, which can cause root burn and soluble salt build up. Your plants would greatly appreciate it if you used a good houseplant fertilizer that you mix with water and apply every once in a while from March through September.

Thanks, rhizo. I don't see any spider mites... But it has been a loooong time since they were repotted. So you would recommend that I replace the existing soil with fresh soil?

And I will ditch the fertilizer sticks. Can you recommend a good fertilizer for me?

I found this website: http://www.planetnatural.com/site/xdpy/sgc/Organic%20Fertilizers/House%20Plant%20Fertilizer

I imagine those might be some good fertilizers to use.

Also, what would be the best soil to use when I repot? I usually just buy the stuff at Home Depot. Is there a better option?

actually these plants really don't like fertilizer. as long as they get water & are allowed to dry out somewhat between waterings & have proper lighting they won't need the stuff.

as to light, be careful to provide lots of it but always indirectly. full strong sunlight will cause sunburn.

it's just as awful looking on the plant as it is on humans.

lil.

Neither of them gets full on direct sunlight except for a short period each morning. I don't think they're getting burned.

And corn plants don't like fertilizer? Really?

I fertilize mine, but lighter than most other plants. Too much fertilizer builds up in the soil and leads to leaf burn. But I have found if I go without the fertilizer for a long time, the leaves get really pale.

If you're getting them to flower, which is rather rare, you must be treating them well. I wouldn't change anything. But if you really want to, you can repot. They have tiny root systems, you'll probably just reuse the same size pot without needing a larger one. Get a soilless mix, ProMix is really good. You want something light and fluffy that drains well. If your potting mix seems heavy, mix it 2/3 potting mix and 1/3 perlite for extra drainage. Corn plants will not do well in soil that holds lots of moisture!

Thanks. Yes, they flower at least once a year, sometimes twice! I will replace the soil in their pots this weekend. I'll use either Pro-Mix or this stuff called Ocean Forest that I found online, and looks really good.

I appreciate the help, everyone!