How to Regrow Vegetables from Kitchen Scraps at Home

Throwing vegetable scraps into the trash feels like a waste of money. You cut off the root of a green onion, toss it away, and buy another bunch next week. What if you could turn those kitchen scraps into fresh food on your windowsill? You do not need a backyard or expensive tools to do this. A small glass, a little water, and sunlight are all you need to start.

Regrowing food at home is simple and fun. It cuts down on grocery bills. It also reduces trash in your kitchen. If you already practice how to start indoor composting in a small apartment, regrowing scraps is the perfect next step before tossing leftover bits into your bin. Here is how you can easily regrow five everyday vegetables right on your kitchen counter.

Green Onions: The Easiest Plant to Regrow

Green onions are the best plant for any beginner. They grow fast and need very little care. You can see new green shoots in just two days.

Save the white root base the next time you chop scallions. Leave about an inch of stem attached to the roots. Place the roots down into a small, clear glass jar. Add just enough water to cover the roots, but keep the top of the stem dry. Put the jar on a bright windowsill.

Change the water every two days so it stays fresh. Within a week, the green stems will shoot up several inches. When you need green onions for dinner, snip what you want with scissors. Leave the root in the water, and it will keep growing back for weeks.

Celery: Fresh Stems from the Base

Celery takes a bit more patience than onions, but it works just as well. Most people cut the bottom off a bunch of celery and toss it straight into the garbage. That hard bottom base can grow a whole new plant.

Cut across the celery stalks about two inches above the base. Rinse the base with cool water. Place it cut-side up in a shallow bowl with about half an inch of warm water. Keep the bowl in a sunny room with plenty of natural light.

Sprinkle a few drops of water on the top surface every day. Empty and refill the bowl every other day. After five to seven days, you will see tiny yellow leaves sprout from the middle. Once small green leaves appear, move the base into a pot with potting soil. Cover everything except the tiny new leaves, and water it regularly.

Garlic Greens: A Quick Flavor Boost

Have you ever seen an old garlic clove start to sprout a green tip in your pantry? Do not throw it away. You cannot easily grow a whole new garlic bulb in a shallow dish, but you can grow delicious garlic greens.

Garlic greens taste like a mild mix of garlic and chives. They taste great on eggs, baked potatoes, and hot soups. Take a sprouted garlic clove and place it in a small cup. Add a shallow splash of water to cover the bottom of the clove.

Make sure the water does not cover the entire clove, or it might rot. Put the cup in a bright spot. In a few days, the green sprout will shoot up tall. Snip the top inch or two when you want to season your food.

Romaine Lettuce: Crisp Leaves on Your Windowsill

Romaine lettuce regrows in the exact same way as celery. You can do this with head lettuce, bok choy, or cabbage. Instead of buying a whole new plastic box of greens, use the stump you already have.

Keep the bottom stump of the lettuce head intact. Cut about two inches from the bottom. Set the stump upright in a shallow dish of water. The water level should reach about halfway up the stump.

Place the dish on a sunny windowsill. Refresh the water every day to stop slime and smells. Within three days, fresh new leaves will start pushing out from the center. You will get enough fresh leaves for a sandwich in about two weeks.

Carrot Tops: Peppery Greens from Leftover Roots

You cannot regrow an actual carrot root from a scrap. However, you can regrow carrot tops, which make a great bitter green for homemade pesto or soup garnish.

Save the top inch of a fresh carrot. Place the carrot tops cut-side down in a flat dish. Pour in water so it barely covers the bottom half. Put the dish in a bright area with good airflow.

The feathery green tops will start growing within days. Harvest them once they reach three or four inches in height. For more practical ideas, check out other helpful home and living guides to make small living spaces feel greener.

Three Simple Rules for Success

Regrowing scraps does not require expert skill, but three simple habits make all the difference:

• Change the water often. Stale water grows bacteria and makes roots smell bad. Swap in fresh tap water every single day or two.
• Give them light. Plants need light to make food. A south-facing windowsill is ideal.
• Know when to pot. Water helps roots sprout, but soil gives food. Move plants into small pots with dirt once strong roots develop.

Give this a try with your dinner scraps tonight. Drop a green onion root in a cup of water and see what happens by tomorrow.