I read recently that you can regrow celery from the bottom of a bunch of celery. I love any way I can grow food inexpensively or for free. I also read that you can keep doing this over and over, possibly indefinitely. This may be the best thing I have ever heard. Celery is now infinite. Maybe.
I cut the base off the last bunch of celery I bought and set it into a saucer of water, cut side up, for a couple days. I looked into the center of the tightly coiled celery stalks and there was a few small, pale leaves coiled up, new celery already underway. After a couple days sitting in water, these leaves started to grow above the cut stalks.
Then I stuck the celery into one of my pots on our balcony. The leaves are growing more quickly, they seem to enjoy this little burst of heat we are having. I cut this celery base about a week ago and it has been in the soil for maybe four days. It hasn't got any root growth that I can see on the bottom, but it's new leaves look really healthy.
When it gets a few new stalks growing up a bit, I am going to plant it in my front yard garden bed and burry the older, dead parts so just the new growth is showing.