Kitchen scraps you can actually regrow (and ones you can't)

Regrowing from scraps costs nothing and puts vegetables you were about to bin to work instead — a genuinely good place to start a kitchen garden. But not every viral "grow it from scraps" video actually leads anywhere edible. Some of it is closer to a science-fair project than a food source. Here's an honest split, based on the vegetables that actually show up in Indian kitchens.

Actually works, and worth doing

• Spring onion (green onion). Save the white base with roots attached, place it root-down in a shallow bowl of water, and it regrows fresh green shoots within a week. This is the most reliable regrow on the list, near-guaranteed success.
• Coriander and mint stems. If you buy bunches with intact stems, the same water-rooting method used for mint cuttings works — see our coriander and mint growing guide for the full method.
• Curry leaf sprigs with a bit of stem. Occasionally root in water, though success is inconsistent — a nursery-bought sapling is a more reliable way to start a curry leaf plant.
• Fenugreek (methi) seeds. Not technically a scrap, but the whole fenugreek seeds sitting in your spice box germinate readily when soaked overnight and sown shallow. A genuinely fast, easy win — ready to harvest as microgreens in under two weeks.
• Potato eyes. A potato with visible sprouting "eyes" can be cut into pieces (each with an eye) and planted 5–7 cm deep in a large, deep container. It takes real space and months to produce a harvest, but it does work.

Technically regrows, rarely worth it

• Onion bulb bottoms. They'll sprout green shoots, but those shoots are thin and the original bulb doesn't regenerate into a proper new onion in a container setup — you get green onion-like tops, not a fresh bulb.
• Garlic cloves. A sprouted clove planted in soil will grow greens you can snip and use like chives, but forming a full new garlic bulb takes 4–5 months and a lot more space than most balconies have to spare for one bulb's worth of garlic.
• Ginger knobs. This does work and is popular online, but it's slow — 8 to 10 months to a usable harvest — and needs a wide, shallow container kept consistently warm and moist. Fine as a patient side project, not a quick win.

Doesn't really work — skip these

• Tomato slices or seeds squeezed from a store tomato. They can germinate, but most supermarket tomatoes are hybrid varieties, so the resulting plant is often less productive than one grown from a proper seed packet or nursery seedling.
• Regrowing a full carrot or beetroot from the top. The cut top will sprout leafy greens in water, which look promising, but the root itself does not regenerate into a new carrot or beet — you only get greens, not another vegetable.

If your scrap is regrowing something you can actually eat within a week or two — spring onion, herbs, methi — it's worth the counter space. If it only regrows leaves, or takes months for a small return, it's usually more useful chopped into the compost. Either way, once a scrap has rooted, get it into proper soil sooner rather than later. Roots left sitting in water for weeks tend to come out weaker than ones moved to potting mix early.