Regrow Kitchen Scraps: 8 Easy Foods To Grow

Throwing away vegetable ends and herb stems? Think again. Regrowing food from kitchen scraps is an easy, cost-free way to produce fresh ingredients right on your windowsill. This method slashes grocery bills, minimizes waste, and brings gardening joy without needing seeds or soil upfront. Common scraps like green onion bottoms, celery bases, and potato sprouts can yield multiple harvests, providing greens, roots, and herbs indefinitely. Whether you’re a beginner or seasoned gardener, these techniques require minimal space and effort.

Why Regrow Kitchen Scraps?

Regrowing scraps offers multiple benefits. First, it saves money: a single bunch of green onions can produce greens for months, replacing repeated purchases. Second, it reduces food waste— the USDA estimates American households discard 30% of food, much of it scraps that could regrow. Third, it’s sustainable, cutting plastic packaging and transport emissions. Finally, homegrown produce is fresher, nutrient-dense, and pesticide-free. Start with items you already buy, like onions or lettuce, for quick wins.

Green Onions (Scallions)

Green onions top the list for ease. After using the tops, save the white root base with 1-2 inches of green.

• Place the base in a shallow glass of water, roots down, on a sunny windowsill.
• Change water every 2 days to prevent bacteria.
• New greens sprout in 3-5 days; snip tops as needed, leaving roots intact for continuous growth.
• Transplant to soil for bigger yields: pot in well-draining mix, water regularly.

One bundle yields harvests for weeks. Pro tip: Use cooler water to extend growth.

Celery

Don’t discard celery bottoms—they regrow into full stalks. Cut the base 2 inches above the root end.

• Place in a bowl with ½ inch warm water, cut side down.
• Position in bright, indirect light; mist daily.
• Roots and new hearts appear in 5-7 days. Refresh water weekly.
• Once rooted (1-2 weeks), plant in soil: use potting mix, keep moist, harvest outer stalks.

Expect continuous harvests; celery thrives indoors year-round.

Romaine Lettuce and Other Leafy Greens

Leafy greens like romaine, cabbage, and bok choy regrow from cores. Save 1-2 inches of the base.

• Submerge base in a bowl with shallow water in sunlight.
• Mist leaves 2-3 times weekly; new leaves emerge in 3-10 days.
• Harvest center leaves; outer ones may bitter—remove as needed.
• Transplant to soil after roots form for fuller heads.

Romaine yields salad greens indefinitely. Bok choy adds Asian dish variety.

Potatoes

Sprouted potatoes are goldmines. Unlike roots, tubers regrow from eyes (sprouts).

• Cut potato into pieces, each with 1-2 eyes.
• Let cuts callus 1-2 days to prevent rot.
• Plant 4 inches deep in loose soil, eyes up, in full sun.
• Water consistently; harvest small ‘new’ potatoes in 10-12 weeks or mature ones later.

One potato yields 5-8 more. Ideal for high food return.

Sweet Potatoes

Similar to potatoes, use slips from scraps.

• Submerge half a sweet potato in water (toothpicks suspend it).
• Place in sun; sprouts (slips) form in 2-4 weeks.
• Twist off 4-inch slips, root in water 2 days.
• Plant slips in soil; harvest in 3-4 months.

Great for vines and tubers.

Garlic

Garlic sprouts from cloves or scraps.

• Plant sprouted clove pointy-end up, 2 inches deep in soil.
• Keep moist, sunny; greens usable in 1 week, bulbs in months.
• From bulb bottom: place in water until roots sprout, then soil.

Indoor greens provide chive-like flavor.

Herbs: Basil and Cilantro

Propagate herbs from stems.

• Select healthy, non-fridge-stored stems (4-6 inches).
• Strip lower leaves, place in water.
• Roots in 7-10 days; pinch tops for bushiness.
• Pot in soil once rooted.

Basil perfect post-pizza; cilantro follows suit.

Root Vegetables: Carrots, Beets, Turnips

Regrow tops only—not edible roots.

• Save top ½ inch with some root.
• Place cut-side down in shallow water, sunlit.
• Greens sprout in days; edible in salads, pesto.
• Transplant for larger greens.

Nutritious bonus, though not full veggies.

Other Scraps: Ginger, Lemongrass, Onions

Ginger: Plant rhizome pieces with eyes in soil; harvest in 8-10 months.

Lemongrass: Root stalk bases in water, then soil.

Onions: Root-end in water or soil; both tops and bulbs regrow.

Tips for Success

Maximize yields with these:

• Use filtered water; change frequently.
• Provide 4-6 hours sun or grow lights.
• Well-draining soil with compost.
• Avoid overwatering to prevent rot.
• Harvest regularly for more growth.

Frequently Asked Questions (FAQs)

What scraps regrow easiest?

Green onions, celery, and lettuce bases sprout fastest in water.

Can I eat regrown carrot tops?

Yes, they’re nutritious for salads, soups, pesto.

Do I need soil?

Start in water; transplant to soil for best long-term growth.

How much sun?

4-6 hours daily; south-facing windows ideal.

Any pests?

Rare indoors; inspect for aphids, rinse off.

Regrowing scraps empowers sustainable eating. Start small, expand your kitchen garden, and watch savings grow!

This article is general information, not personal financial advice. Consider your own situation, or speak with a licensed adviser, before acting on it.