Regrowing celery

I saw some photos on pinterest showing celery that was regrowing from a cut stalk, and decided to try it.
Here's mine a few days after putting the cut stalk in water:

Regrowing celery, after a few days

It was already coming up so nicely; I was completely amazed.  I didn't think it would work at all because the celery was half frozen and the stalk was white.  The center started turning green almost immediately after putting it in water.

Regrowing celery, after a few days

Now here's the same celery, two weeks later.  Incredible, isn't it?  It has lush bushy leaves now.

Celery regrowth after 2 weeks (I think)

Here's another shot; please excuse my dirty windows.   They're dirty between the glass, where I can't get at it. The celery is going to have to be transplanted soon because the stalk part is starting to rot from being immersed in water.

Celery regrowth after 2 weeks.

I am really enjoying watching my celery regrow. My Dad didn't believe it would regrow, until he saw mine.  Now he wants to try it too, lol.

I bought some other plants to try this with...you can sort of see the green onions off to the side.  they haven't been cut yet; I figured I'd leave them in water so they'd stay fresh, and cut the green as I need it.  I don't know if it will work, but I'll let you know.

I also bought some Anise, which has a stalk like celery.  After I eat it (it' so yummy; tastes like licorice!) I'll stick it in water to see if it will regrow, too.

I've heard lettuce will regrow, as well as onions and bok choy.  A friend of mine tried the lettuce and hers didn't work...she said it just rotted so she tossed it.