Stephanie emailed in the following tip:
Did you know that instead of throwing out the stems of romaine lettuce or celery you can re-plant them?
Just cut the ends off of the plants (about two inches from the base), put in a shallow dish of water, and let them sit for a day or two.
Then plant the pieces in the vegetable garden with the stalk side up and water thoroughly. You could also plant them in any container filled with dirt if you don’t have a garden, just make sure they get plenty of sun.
Once you have them growing, you can cut off your new lettuce/celery on an “as needed” basis.
What a great way to save yourself some money at the grocery store! -Stephanie