26 Foods You Can Regrow Instead Of Wasting

"Pop your cut scallions in a glass of water and, clearly, they regrow. I had to try it for myself.

I chopped off some scallions and stuck them root-down in a Mason jar above my sink. I topped off the water once or twice when I saw that it had mostly evaporated, but other than that I did nothing. To my surprise, these grew fast. Within a day or two there was fresh growth, and within a week they had 3 to 4 inches of fresh green onion on top."

Instead of throwing away old potatoes that have grown eyes, simply cut it into several pieces and plant it in the ground to grow new ones. Each eye can turn into a whole new potato

Simply place a stem of around 10cm/ 4 inches long into a glass of water, making sure that the leaves are well above the water level. Roots will soon begin to grow and as soon as the roots are growing well, these cuttings can be transplanted into containers, or directly into your garden

Soak carrot tops in a shallow pool of water for one week and transfer to soil when roots form. The tops will grow beautiful greens that are great in salads and pestos, as a replacement for parsley, or simply as a beautiful house plant

"Plant mushroom stalks in soil with some compost or used coffee grounds and keep them in a moist environment, preferably where it will be cool at night. They can be tricky to grow, and within a few days the stems will either start to sprout new heads or rot."

When we talked about growing regular potatoes, we mentioned that you need to cut the potato into small pieces and places it in a pot of soil watering it regularly. There’s also another method to grow regular potatoes or sweet potatoes. Instead of placing them in the soil, you’ll have much greater success if you cut them in half and use toothpicks to suspend them over a glass of water. The great thing about sweet potatoes is that they are an excellent staple food and lost a lot longer than normal ones. This is one of the healthiest vegetables you can grow and just a few will produce hundreds. Once they start to grow roots, you can put them in soil.

STEP 1 – REMOVE & CLEAN PIT
You’ll need to start by removing the pit from the avocado carefully (without cutting it), and then washing it clean of all the avocado fruit (often it helps to soak the pit in some water for a few minutes and then scrub all the remaining fruit off). Be careful not to remove the brown skin on the pit – that is the seed cover.

STEP 2 – LOCATE WHICH END IS ‘UP’ AND WHICH IS ‘DOWN’
Some avocado pits are slightly oblong, whereas others are shaped almost like perfect spheres – but all avocado pits have a ‘bottom’ (from where the roots will grow), and a ‘top’ (from which the sprout will grow). The slightly pointier end is the top, and the flat end is the bottom. In order to get your pit to sprout, you will need to place the bottom root end in water, so it’s very important to figure out which end is the ‘top’ and which is the ‘bottom’ before you go piercing it with toothpicks.

STEP 3 – PIERCE WITH FOUR TOOTHPICKS
Take four toothpicks and stick them at a slight downward angle into the avocado seed, spaced evenly around the circumference of the avocado. These toothpicks are your avocado scaffolding, which will allow you to rest the bottom half of the avocado in water, so therefore the toothpicks need to be wedged in there firmly. I recommend sticking them in at a slight angle (pointing down), so that more of your avocado base rests in the water when you set this over a glass.

STEP 4 – PLACE AVOCADO SEED HALF SUBMERGED IN A GLASS OF WATER
And set on a quiet windowsill with sunlight. It’s helpful to use a clear glass so you can easily see when roots start to grow, and also when the water needs to be changed. Many guides recommend to change the water every day, but I found, through trial and error, that it is better to change the water every five days to a week or so. You do want to make sure you change the water regularly, to prevent mold, bacteria and fungus growth, which can doom your little avocado sprout.

STEP 5 – WAIT FOR YOUR AVOCADO SEED TO SPROUT!
Many online guides I have read say that sprouting can take anywhere from 2-4 weeks, but in my experience, it usually takes at least 8 weeks to get a sprout, so be patient. Here is the process you will witness:

1. The top of the avocado pit will dry out and form a crack, and the outer brown seed skin will slough off.
2. The crack will extend all the way to the bottom of the avocado pit, and through the crack at the bottom, a tiny taproot will begin to emerge.
3. The taproot will grow longer and longer (and may branch), and eventually a small sprout will peek through the top of the avocado pit.
4. Do not allow your taproot to dry out unsubmerged EVER – doing so will be the death of your plant

STEP 6 – POT IN SOIL WHEN TREE IS ABOUT 6” TALL
When the stem is 6-7 inches long, cut it back to about 3 inches, this will encourage new growth. When it hits 6-7 inches again, pot it up in a rich humus soil in an 8-10″ diameter pot, leaving the top half of the seed exposed. Place on a sunny windowsill. Avocados love sun – the more sun the better.
STEP 7 – WATER & WATCH IT GROW
Give it frequent waterings with an occasional deep soak. The soil should always be moist, but not saturated. Yellowing leaves are a sign ofover-watering; let the plant dry out for a few days.

STEP 8 – PINCH OUT TOP LEAVES TO ENCOURAGE BUSHINESS
When the stem reaches 12 inches tall, pinch out the top two sets of leaves. This will encourage the plant to grow side shoots and more leaves, making it bushy. Each time the plant grows another 6 inches pinch out the 2 newest sets of leaves on top.

STEP 9 – TROUBLESHOOTING BUGS
My avocado trees seem to collect aphids – the nasty critters can’t get enough of the delicious avocado leaves. If you get them, here’s how to get rid of them: Wash all of the aphids off the plant by spraying your plant down with a hose outside or in the sink/shower. Once the little pests are off, spray your plant with a mixture of water with a small squirt of dishwashing liquid and a teaspoon of neem oil. This will keep aphids from returning. Check your plant every 4-5 days and re-clean and spray when necessary.

STEP 10 – WINTERING
Baby avocado trees can kick it outdoors in summer, but if you live anywhere where it gets cooler than 45 degrees F, you’ll need to bring them back indoors in the fall/winter, before the temperatures fall.

Carefully cut the outer skin (containing the seeds) off the berry, or extract seeds using tweezers. Place the skin or seeds in a container with soil, cover with soil, place in a sunny spot and water regularly until sprouts emerge. Transplant the sprouts to a strawberry pot or outside garden in springtime

Most cut herb bundles (the kind you get from the grocery store) can be grown into whole new plants. Remove the bottom leaves from the stems (but keep the top ones) and soak them, cut side down, in warm water. Once roots have sprouted, transfer to dirt and watch it grow

Once you bring your pineapple home, cut off the leafy top about half an inch (1.5 cm.) below the leaves. Then remove some of the lowest leaves. Trim off the outer portion of the pineapple top at the bottom of the crown, or stem, until you see root buds. These should resemble small, brown-colored bumps around the stem’s perimeter. Allow the pineapple top to dry for several days to one week prior to planting. This helps the top to heal, discouraging problems with rotting.

Although it’s possible to sprout a pineapple in water, most people have better luck rooting them in soil. Use a light soil mix with perlite and sand. Place the pineapple top in the soil up to the base of its leaves. Water thoroughly and place it in bright, indirect light. Keep it moist until roots develop. It should take about two months (6-8 weeks) for roots to establish. You can check for rooting by gently pulling the top to see the roots. Once significant root growth has occurred, you can start giving the plant additional light.

Lemon trees can be grown from seeds and if you live in an area that gets really cold winters, you can simply grow dwarf trees indoors. Meyer lemons tend to have smaller plants so choose these if you want an indoor lemon tree. You will begin to get lemons from your tree in just a couple of years so remember that you won’t actually get lemons the same year that you plant them. Just be sure to clean and dry your seeds before planting and choose a soil that is rich in nutrients for the best results.

You can grow a number of hot peppers from the seeds that are leftover. Just collect the seeds from your habaneros, jalapenos or any other peppers that you have on hand. Plant them in potting soil and keep in direct sunlight unless it is warm outside and then you can just plant them in your garden area. Peppers grow relatively fast and don’t require a lot of care. Once you get a new crop, just save some of the seeds for replanting again.

All you need:

A small, clear container (I used tiny plastic shot glasses so that my glass shot glasses wouldn’t smell like garlic… coconut rum + garlic = gross)
Unpeeled garlic cloves (make sure the garlic is from your local farmer’s market)
Water
Add a bit of water at the bottom of your shot glass or small container – just enough to cover the bottom of your clove (don’t submerge the clove or it’ll rot). Keep this on your windowsill and after a few days, you’ll have scapes! Let them grow until they’re several inches tall, then cut from the top.

•Chop off the base of the bok choy, much like you would slice the base of a bunch of celery.

•Place the bok choy in a bowl or saucer of warm water, with the cut side facing up. Set the bowl on a windowsill or another sunny location.

•Change the water every day or two. It’s also a good idea to occasionally mist the center of the plant to keep it well-hydrated.

Rosemary can easily be regrown by using cuttings. You’ll most likely need a pot of soil for this one. Cut off a leaf or stem from a big plant and place it in a cup of water and let it grow for a few weeks. After that, transplant it to soil, keeping the soil moist but not drenched. Wait a few months and you’ll have a fully-grown rosemary plant. This one doesn’t do too well in the winter, so try and save it as a summer project.

Soak lemongrass stalks, root end down, in warm water. After several weeks, transfer the rooted stalks into soil and grow your own fresh lemongrass!

Tomatoes can be grown just by saving those seeds that you probably throw out anyway. You just have to rinse the seeds and allow them to dry. Plant in a good, rich potting soil until you notice growth coming in. Allow the seeds to get a few inches high before transplanting them outdoors. During cold weather you can grow your tomatoes indoors. Just remember to keep them in an area that gets plenty of sunlight and water a few times each week.

The butt of celery can regrown a few extra stalks with just a little love. Simply place the end of the celery, root side down, onto a plate of water in a sunny window. After one week, roots will appear and it's ready to transfer to soil.