9 Vegetables You Can Regrow From Scraps (Your Trash Is Hiding a Free Garden)

You paid for the whole vegetable. So why are you throwing half of it away?

That lettuce stump, the root end of your green onions, the pumpkin guts you just scooped onto newspaper: every one of them is still alive. Give them a glass of water or a scoop of dirt and they’ll grow you more food for free.

Some of these take two days. Some take a whole summer. All of them start with something you were about to toss. Here are nine vegetables you can regrow from scraps, and where to find the full how-to for each.

1. Pumpkins and Squash From the Seeds You Scoop Out

Carving pumpkins this month? That slimy handful of seeds is next year’s pumpkin patch sitting in a bowl. The catch is that grocery store pumpkins don’t always grow true, and there’s an easy way around it.

There’s also one planting detail that keeps the seeds from rotting before they ever sprout, a simple trick for bigger carving pumpkins, and a plan for the hundreds of seeds you won’t plant.

👉 Save your pumpkin seeds and grow next year’s patch for free

2. Green Onions That Grow Back in a Glass

This is the easiest plant on the planet. Put the root ends in a glass on the windowsill and you’ll see new growth in a day or two.

But water only gets you so many harvests before the plants run out of steam. Find out how many rounds to expect, and the switch that keeps them producing indefinitely.

👉 Stop throwing away your green onions and grow them again

3. Lettuce From the Stump

Plant a lettuce stump on Monday and you’ll have fresh leaves poking up by the weekend. Iceberg, butter, and romaine all regrow.

There’s one thing you have to get right at the grocery store, though, or your stump won’t do a thing. The guide also covers which variety is the most forgiving for beginners.

👉 Turn that lettuce stump into a second lettuce

4. Red Cabbage From the Core

That hard little core at the bottom of a red cabbage will push out tender new leaves with gorgeous purple veins on a sunny windowsill. If they come back more purple than red, there’s a fun reason for that. Bonus: the same trick works on nearly the whole cabbage family.

👉 Grow free purple cabbage leaves from the base

5. An Avocado Tree From the Pit

Every avocado pit is a live seed, and you can grow an avocado from seed without the famous toothpick-and-water-glass setup. The easier method uses a dark cupboard and a lot of patience.

You’ll also want the honest truth about fruit before you start, plus the one snip that turns a gangly stick into a full, bushy houseplant.

👉 Grow a free avocado tree from your lunch

6. A Tomato Plant From a Single Slice

Lay a tomato slice on some soil, cover it lightly, and wait. In a week or two, a crowd of seedlings pops up. It’s the most foolproof way to start tomatoes, even from a bland supermarket one.

Your real problem will be having way too many plants, and the post covers what to do about it.

👉 Grow a whole tomato plant from one slice

7. Potatoes From That Sprouting Spud in the Pantry

Found a potato growing pale little tentacles in the back of the cupboard? Don’t toss it. With a bag of dirt on the patio and no digging at all, one forgotten spud can turn into a whole pile of new potatoes.

There’s one slightly odd step you can’t skip. It gets you more potatoes and it keeps them safe to eat.

👉 Plant your sprouting potato and grow a bag full

8. Sweet Potatoes From Slips

A single grocery store sweet potato can become a dozen plants. The secret is growing slips right on your kitchen counter.

The leaves are edible too, but there’s a serious warning about mixing them up with the other potato. The guide also explains why some store-bought sweet potatoes refuse to sprout at all.

👉 Turn one sweet potato into a dozen free plants

9. Corn From One Saved Cob

Every cob holds hundreds of seeds. Set one aside at your next cookout, dry it, and you’ve got next year’s crop in an envelope.

There’s one planting rule that decides whether you get full ears or sad, gap-toothed ones, and a fun bonus about growing popcorn straight from the bag.

👉 Save one cob and grow corn next season

Start With What’s in Your Fridge Tonight

You don’t need a garden, a greenhouse, or a green thumb. You just need to stop throwing the good part away.

Start tonight with green onions or a lettuce stump. By the weekend you’ll be hooked, and next spring you’ll be planting slices, spuds, and pumpkin seeds.

Pin this list so you have it the next time you’re about to scrape scraps into the trash.