How to Grow Herbs from Kitchen Scraps: Regrow Basil, Green Onions & More

Growing herbs at home doesn’t have to start from seeds or store-bought plants. In fact, you can regrow popular herbs and greens right from your kitchen scraps—saving money while enjoying a sustainable and satisfying gardening experience. This technique is perfect for beginners, apartment dwellers, or anyone looking to reduce food waste.

In this guide, you’ll learn which herbs regrow best, how to set up your regrowing station, and what to expect during the process.

Why Regrow Herbs from Kitchen Scraps?

• Cost-effective – No need to buy new seeds or seedlings

• Eco-friendly – Reduces food waste

• Beginner-friendly – Minimal equipment required

• Year-round gardening – Works indoors, even in winter

5 Herbs and Greens You Can Regrow from Scraps

Here are the most reliable and easy herbs to regrow at home using just a glass of water and a sunny spot.

1. Green Onions (Scallions)

One of the easiest and fastest herbs to regrow. Keep the white root ends (about 2–3 inches long) and place them upright in a jar with just enough water to cover the roots.

• Growth time: Visible regrowth in 2–3 days

• Pro tip: Change water every 2 days and trim dead leaves

2. Basil

Select basil stems with at least 4–6 inches in length and remove the lower leaves. Place the cuttings in water in a bright window.

• Growth time: Roots in 7–10 days

• When to plant: Once roots are 2 inches long, transplant into soil

• Tip: Avoid direct harsh sunlight early on—filtered light is ideal

3. Mint

Just like basil, mint stems regrow well in water. Snip a healthy stem and place it in a glass jar.

• Growth time: Roots form within a week

• Warning: Mint grows aggressively—plant in a separate pot!

4. Cilantro

Trim stems 3–4 inches long and place in water. Cilantro is a bit more delicate and prefers cooler temperatures.

• Growth time: Slower—expect roots in 10–14 days

• Tip: Keep out of direct afternoon sun to prevent wilting

5. Lemongrass

If you cook Asian dishes, this one is gold. Save the bottom 2–3 inches and place them in water.

• Growth time: Roots form in 7–14 days

• Bonus: Once transplanted, lemongrass can grow into a large bush outdoors!

Setup Tips for Successful Regrowing

• Use clear glass containers so you can monitor root growth

• Change water every 2–3 days to prevent bacterial buildup

• Place cuttings in a bright, warm window (south-facing works best)

• Transplant to soil once roots are 2–3 inches long

• Use organic potting mix and keep soil moist—not soaked

Aftercare Once Transplanted

• Water regularly but let the topsoil dry slightly between sessions

• Use a diluted liquid fertilizer every 2 weeks to encourage strong growth

• Pinch off top leaves to encourage bushier growth, especially in basil and mint