. Simply slice about 2 inches off the root end of a celery bunch and set it in a shallow bowl or jar. Make sure an inch of the root is submerged in water and leave it near the window to give it adequate access to sunlight. Don't forget to change the water every few days. In a week, you should start to see the small stalks and leaves grow back.
It is completely normal for the outer base starts turning brown after a few weeks, simply cut them off. However, if it continues to rot, it means it is time to throw the whole stem out or move to a potting soil instead.
*Boomi News is the official blog of Boomi, a Shanghai-based startup that provides starter kits filled with sustainable products to help guide you towards a more zero-waste lifestyle.