The next time you have green onions, don't throw away the white ends. Simply submerge them in a glass of water and place them in a sunny window. Your onions will begin to grow almost immediately and can be harvested almost indefinitely. We just use kitchen scissors to cut what we need for meals. I periodically empty out the water, rinse the roots off and give them fresh water.
How to Regrow Food in Water: 10 Foods that Regrow Without Dirt
Save money by regrowing these 10 foods that regrow in water without dirt. Perfect if you don't have room for a garden & trying to save a few bucks! Regrow lettuce, regrow celery... regrow vegetables with one of the best budget tips of the year, and easy for anyone to do! :: DontWastetheCrumbs.com
Grow a lemon plant indoors. Apparently lemon leaves smell good. Soak lemons seeds overnight. Gently remove outer layer of seeds. Put back into water as you prepare soil. Plant lemon seeds in a circle pattern. Place small pebbles on top of seeds. Water occasionally and watch it grow.
Another pinner wrote, "Spray the plant with Epsom salts (1 teaspoon dissolved in a spray bottle of warm water (about 4 cups). That gives the pepper plant a boost of magnesium that is required at flowering time to produce fruit. Spray them again 10 days later and in a few weeks, our expert friends report, you will have more peppers than you can eat."