Hello!
Quite a while ago, probably about a year, I started growing celery from a left over celery stump. Now the plant is about a foot tall with very thin, soft stalks. It seemed to have reached a plateau and isn't getting much bigger. I moved it to a bigger pot about a month ago but it didn't seem to help. I've read that growing celery from a stump yields skinny stalks but I'm just wondering if there's anything I can do to get it to grow a little bigger and firm up the stalks. Also, if it does get bigger, how do I go about removing some of the stalks without killing the plant. See the picture, I held a pen up next to it for a thickness reference.
Thank you!!