Grow your own green onions: Apparently, you just place the onions into a jar of water and put into a sunny window, rinse and refill the jar with fresh water every few days. You’re able to use the tops as needed while keeping about 1 inch of the very bottom of the onion bulb intact to put back into the water. These bottoms will regrow their tops. Kids would love to watch them grow. Green Onions Growing, Growing Greens, Growing Veggies, Herb Garden, Vegetable Garden, Garden Water, Garden Beds, Vegetables Garden