All you need is a container to hold water and toothpicks. For beets, after you have cut off the greens, cut off a small slice from the top of the beet. Place in warm water and put it in sunshine. It will produce more greens which I love to add to salads.
With celery and romaine or butter lettuce you may need to add three toothpicks. After you have cut off the celery stalks, insert three toothpicks and place in a glass container (large baby food jars work well) wide enough to suspend so the the bottom part is in water. Place in a sunny spot. Once the roots have developed, you can add it to a pot with soil to get more greens.
Regrowing lettuce is the same as celery including planting it in a pot with soil when the leaves get to be about three inches high.
With all of the vegetables, make sure to add water when needed and keep in a sunny place if possible.
I enjoy regrowing because it's fun...and kind of like getting something for nothing! And I love having lots of plants around, especially ones that I can harvest. Give it a try. And if you have kids, let them try it out also. It may encourage them to eat more greens...or at least give them a try!
Talk with you tomorrow...