23 Foods You Can Regrow From Kitchen Scraps Before You Toss Them
Okay so I was standing over the trash can holding a potato with sprouts poking out everywhere, about to chuck it, when it hit me. Half of what we throw away every week could probably still grow.
Turns out almost every root, stem, and leafy scrap sitting in your fridge right now has a second life in it. Some of it just needs a windowsill and a jar of water. Some of it needs a lot more patience.
We ranked twenty-three of these from mildly useful all the way up to the one that genuinely multiplies itself into pounds of free food. Stick around for that last one, it’s kind of ridiculous.
23. Turnip Tops
Turnip tops regrow their leafy crowns faster than almost anything else on this list. Cut off the top inch, the part with the little ring where the leaves used to sprout, and drop it in a shallow dish of water. New leaves show up within days, not weeks.
You won’t get another turnip out of the deal, the root itself is done for. But the greens are basically free salad at that point, and they taste a lot like mild mustard greens once you cook them down.
Keep the water fresh and it’ll keep producing for a couple weeks before it wears out. Small win, but an easy one.
22. Radish Tops
Ever notice how radishes always come with way more greens attached than anyone actually eats? Turns out that’s the part worth saving.
Float the cut top in a little water, change it every couple days, and you’ll get new leaves sprouting off the crown within a week. They’re peppery, a little sharp, good tossed into a salad or blitzed into a quick pesto.
It’s not a full second radish, just the leaves. But it stretches one bunch into two rounds of something usable, which is more than most people expect from what’s normally garbage.
21. Parsley
I’ve done this one by accident more than once, forgetting a bunch of parsley stems in a glass of water on the counter. Within a week or two, tiny white roots start showing up at the base.
At that point you can just leave it in water indefinitely, snipping what you need, or move it into a pot of soil for something sturdier. Parsley’s hardy once it takes, and a single grocery store bunch can genuinely keep you in fresh herbs for a while.
Not flashy, but it quietly saves you from buying parsley every single week.
20. Cilantro
This one surprised me because cilantro has a reputation for dying if you look at it wrong. But the stems root in water pretty reliably, usually within one to two weeks.
Once roots form, move it to soil and you can keep harvesting outer leaves for a while before it bolts and gets bitter. Cooler spots seem to slow that down.
It’s not endless, cilantro eventually wants to flower and give up on you. But getting even a few extra weeks out of one bunch beats tossing the leftover half after one taco night.
19. Mint
You have to be a little careful with this one, honestly. Cut stems root in water almost aggressively fast, which sounds great until you plant it straight in the ground and it spreads through underground runners without asking permission.
Most people who’ve grown it end up keeping it contained in a pot for exactly that reason.
Either way, one small cutting from a grocery bunch can turn into an entire supply of fresh mint for tea or garnish, more or less on autopilot.
18. Basil
Same basic trick as mint, stems in water, roots in a week or two, but basil’s a lot better behaved.
It likes warm, sunny spots more than mint does, and once it’s rooted you can either keep it going in water or move it to soil for something bigger and longer lasting. A single four to six inch cutting from a store bought bunch is usually enough to start.
Keep changing the water and you can end up with a steady, ongoing supply of fresh basil instead of buying a new plastic clamshell every time a recipe calls for it.
17. Cabbage
Cut off the head for cooking, keep the base, set it in shallow water. That’s really the whole trick with cabbage.
New, loose leaves start showing up from the center after a bit. It’s not a full second cabbage, nothing like the tight round head you started with, but the new growth is real and usable in slaws or stir fries.
Water or soil both work, soil tends to give you a slightly bigger second round if you’ve got the space for it.
16. Shallots
Shallots are onions’ fancier cousin, and they regrow in a similar clustering way. If a shallot sprouts in your pantry before you get to it, plant it pointed end up instead of pitching it.
Give it soil and time and it’ll multiply into a small cluster of new shallots, not just one. It’s the same basic multiplication trick that garlic and regular onions pull off, just with that slightly sweeter, milder shallot flavor at the end.
Store bought bulbs work fine for this, no special variety needed.
15. Onions
I always assumed once you cut into an onion, that was it, game over. Not quite true.
If there’s root left on the bottom, you can set it in water or soil and get green shoots pretty quickly. Those greens are edible on their own, chopped into eggs or soups. Getting a full new bulb takes a lot longer and a lot more soil time, and honestly the greens alone are usually worth the effort.
Store bought onion bottoms work here too, you don’t need anything special.
14. Fennel
This one works almost exactly like celery does. Slice off the bulb for cooking, save the base, and set it in water.
Within a bit you’ll get feathery new fronds coming up from the center, which are edible and taste like a milder version of the licorice flavor the bulb has. You probably won’t get a full new bulb out of it in a windowsill jar, but transplanting to soil gives it a better shot.
Either way, the fronds alone are a nice bonus for something you’d normally just compost.
13. Lemongrass
This was the one that actually made me want to keep a jar going on my counter permanently. Cut stalks root in water, and once they do, you can either keep harvesting from the jar or transplant the whole thing into a pot.
Given warm enough conditions it multiplies into a small cluster over time, so one grocery store stalk can eventually turn into several. That’s a big deal if you cook a lot of Thai or Vietnamese food and keep buying lemongrass by the stalk.
It likes heat, so a sunny window matters more here than it does for something like parsley.
12. Beets
Set the cut crown in shallow water and new leaves show up within days. That’s honestly it, that’s the whole process, and it’s underrated for how fast it works.
Don’t expect a new beet root though, that part of the plant is finished once it’s harvested. What you’re really getting is a steady supply of dark, earthy greens that work well in smoothies or sautéed with a little garlic.
It’s a quick win rather than a big one, but for something that usually goes straight in the trash, quick and easy still counts.
11. Carrots
You know that lacy green stuff that pops up if you leave a carrot top in water too long? That’s not just for looks.
Carrot tops regrow feathery greens pretty quickly, and while they won’t taste like carrot exactly, people use them in pestos or as an herb substitute. Leave it long enough without harvesting and it can even flower, which pollinators seem to appreciate.
You’re not getting a new carrot, to be clear. Just a bonus garnish from something that would’ve gone straight in the compost otherwise.
10. Leeks
Basically giant green onions, that’s the easiest way to think about leeks here. Keep the root end after cooking with the rest, drop it in a jar, and new green stalks start pushing up within days.
Snip what you need for soups or stir fries and it keeps producing for a while. Move it to soil eventually if you want something closer to full size again.
Same basic trick as green onions and scallions, just working with a bigger, heartier base.
9. Bok Choy
Didn’t expect this one to work at all, honestly, but the base regrows crisp new leaves in about a week if you set it in shallow water.
It behaves a lot like lettuce or celery in that sense. You won’t get a full head back, more like a handful of smaller leaves each round, but that’s still a few free stir fries out of something that usually gets tossed whole.
Transplant it to soil if you want a fuller second round instead of just a small windowsill batch.
8. Spring Onions
Save the white root ends, stick them in a jar of water on the windowsill, and new green shoots appear almost immediately. Might be the single most forgiving thing on this whole list.
Cut what you need, let the rest keep growing, and repeat. People keep the same jar going for months this way, snipping a little at a time instead of buying a fresh bunch every week.
It’s about as close to a free, endless supply as anything above it gets. And if you think that’s a good deal, wait until you see what the top five are actually capable of.
7. Romaine Lettuce
Set the base in a bowl of shallow water and new center growth shows up within one to two weeks. Works a lot like the leafy tops earlier on this list, just with a bit more staying power.
You can usually get two or three rounds of smaller leaves out of one head before it wears out. Not a full replacement head each time, but enough for a side salad here and there without buying more lettuce.
Water or soil both work, though soil tends to stretch it a little further.
6. Celery
Probably where this whole trend started for most people, honestly. Set the root end in shallow, warm water and you’ll see new growth from the center within days.
It’s a smaller stalk than what you started with, celery in water alone rarely gets back to full grocery store size. Transplanting to soil helps, and either way you get a real, usable harvest for soups and snacking.
And that’s the last of the smaller wins. From here on out, the numbers actually get impressive.
5. Sweet Potatoes
This is where the list stops being cute windowsill tricks and starts being actual food production. One tuber, suspended halfway in a jar of water with toothpicks holding it in place, sends out multiple sprouts called slips.
Each of those slips can be pulled off and planted separately, and each one grows into its own vine capable of producing pounds of new sweet potatoes by the end of a growing season. From a single sweet potato you bought for a pie, you’re potentially looking at several full plants.
It takes real time, we’re talking a full growing season outdoors or in a large container, not a couple weeks on a counter. But the yield potential is on a completely different scale than anything above it on this list. If you’ve got the patience and a decent sized pot, this is the first one that genuinely feels worth the effort.
4. Ginger
Ginger surprised me the most out of everything on this list, mostly because I never thought of it as something you’d regrow rather than just use up. But a knobby piece with a few of those little buds, the eyes, on it can go straight into soil and grow an entire new rhizome system underground.
It’s slow. We’re talking months before you’ve got anything worth harvesting, and it needs consistent warmth the whole time. But what you end up with isn’t just a bigger version of what you planted, it’s a whole cluster of fresh ginger, and the flavor is noticeably better than what’s been sitting in a grocery store bin for weeks.
Plant one piece from your pantry and, with enough patience, you’re not buying ginger again for a long stretch.
3. Garlic
A single garlic clove, planted pointy end up in soil, grows into an entire new bulb made up of multiple cloves. Not one clove back. A whole bulb.
It takes a while, most guides put it around eight months from planting to harvest, so this isn’t a quick kitchen counter trick like the herbs earlier on this list. You’re looking at a fall planting and a summer harvest if you’re doing it outdoors.
But the payoff is real multiplication, not just a second round of greens. And along the way, the green shoots that come up early are edible too, so you’re not even waiting the full eight months to get something out of it. Save one bulb from this year’s cooking and you can genuinely be growing your own garlic supply going forward.
2. Pineapple Top
Takes the most patience out of everything on the list, and also might be the most fun to just have sitting around while you wait. Twist the leafy crown off the top of a pineapple, let the cut end dry out for a day or two, then root it in water or straight into soil.
It grows into a real, full sized houseplant long before it does anything else, which is honestly reason enough to try it even if you never get fruit. But if you keep it alive and happy for a year or two, it can eventually produce an actual pineapple of its own.
One to two years is a long timeline for anyone hoping for quick results. But going from a piece of fruit you were about to throw in the trash to an actual pineapple growing in your living room is the kind of thing that’s hard not to brag about.
1. Potatoes
Here’s the one that made me stop mid bite the first time someone explained it to me properly. A single potato, the kind that’s been sitting in your pantry a little too long and has started sprouting those little eyes, isn’t just one plant waiting to happen. Each eye is basically its own starting point.
Cut the potato into pieces, making sure each piece has at least one eye, let the cut sides dry out for a day so they don’t rot in the ground, then plant them. Each piece grows its own separate plant. And each of those plants, given a full season, can produce somewhere in the range of five to eight new potatoes, sometimes more.
So one forgotten, sprouting potato that you were about to throw away can realistically turn into dozens of new potatoes by the end of the season. That’s not a stretch, that’s just how the eyes work. Out of everything on this list, herbs that regrow in a week, ginger that multiplies underground, garlic that turns one clove into a whole bulb, nothing else comes close to the sheer number of potatoes you can pull out of one sprouted scrap sitting in your kitchen right now.
The Magic and Power of Endless Vegetables
So next time something starts sprouting on your counter before you’ve gotten around to using it, maybe don’t toss it so fast. Some of that stuff has a lot more left to give than it looks like.
Try one of these, even just the easy jar-of-water ones, and see what shows up in a week. Might be the cheapest grocery trick you pick up all year.
