I took the drain plate off, drilled a few more holes along the base of the pot and...wow, there was a lot of water in there. I'll let them drain and then hit them with a little nitrogen. Being incredibly new at attempting to grow living things, I thought the drain plate helped it drain more. Whoops.
I'd let the plant recover a bit before feeding it. Once it has a chance to breathe again, it may take a week or two before it begins to look somewhat normal and resumes active growth.
And as was suggested earlier, you'll never experience the enjoyment of what these plants can do if you keep them confined to a container. Sure they'll grow and look awesome in big pots, but had they been in the ground they'd look awesome x 2. The roots can become massive especially if they're growing in an region with deep, well drained soils. A few years ago I had to excavate a crown that was 10 or so years old. At about 3.5 feet down, one of the biggest roots was about as thick around as my wrist and growing through some very heavy clay hardpan(ish) soil. The majority didn't bother to grow through it and decided to take the path of least resistance and grow horizontally.
If you can't grow in the ground just realize they'll most likely never hit their potential. Hop On!
Oops, sorry duboman, must have hit the button right after you did. Great minds think alike, ha!