You can start off this free indoor garden with your celery stump in a bowl of water. It’ll grow fresh, spicy leaves in a few weeks. Harvest these and add them to salads, or use them to make pesto.

The outside of the celery may wither, but eventually, it will root out and begin to grow. It can grow like this for a bit, but you'll get better results if you transfer the plant to a pot with soil.

The bottom inch of your celery stump should be submerged in water that you will change every couple of days. Within a week, you should see roots begin to grow and foliage emerge from the center of ...