9 Herbs That Regrow in Water: No Soil Needed

Common names: Basil, Mint, Rosemary, Green Onion, Lemongrass, Oregano, Thyme, Chives, Cilantro

TL;DR

Many common kitchen herbs can regrow simply by placing cuttings in water, requiring no soil. This method supports sustainable living by reducing waste and encouraging fresh herbs year-round with minimal effort.

Quick Definition

Regrowing herbs in water involves placing healthy cuttings of plants like Basil (Ocimum basilicum) or Mint (Mentha spp.) into water to encourage root development. This soil-free propagation method allows continuous harvest and reduces resource use.

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Decision criteria

• Choose herbs known to root easily in water like basil, mint, and green onion.
• Avoid woody or slow-rooting herbs unless you plan to transplant.
• Ensure cuttings have healthy leaves and stems.
• Use clean containers and fresh water to prevent rot.

Regrowing Basics

Use a clear glass or jar filled with fresh, room-temperature water. Place 5–10 cm (2–4 inches) cuttings with leaves above water line. Change water every 3–4 days. Roots typically develop within 1–2 weeks. Once roots are 5–7 cm (2–3 inches), herbs can be harvested or transplanted.

Water Temperature

Room temperature water around 20–22°C (68–72°F) is ideal to encourage root growth without shocking the plant.

Cutting Size and Preparation

Cut just below a node, remove lower leaves to prevent rot, and place in water. Healthy, non-flowering stems root best.

Taste/Use Tuning

If herbs taste bitter, try harvesting younger leaves or rinsing before use. For milder flavor, use less mature stems. Avoid overwatering if transplanted later.

Rituals

• Morning kitchen ritual: check water clarity and harvest fresh leaves for breakfast tea.
• Weekend project: propagate new cuttings to share with friends or expand your indoor garden.
• Mindful cooking: snip fresh herbs directly from water-grown plants to enhance meals.

Sourcing & Quality

Use organic or home-grown herbs to avoid pesticides. Choose fresh, healthy cuttings with no signs of disease. Prefer glass containers for sustainability and ease of cleaning.

Storage

Keep water-grown herbs in bright, indirect sunlight. Change water every 3–4 days to prevent bacterial growth. For longer storage, transplant to soil or refrigerate harvested leaves wrapped in damp cloth.

Comparison Table

Safety

Use caution with herbs if you have allergies. Avoid ingesting essential oils or concentrated extracts from herbs. Regrowing herbs in water is generally safe for culinary use but monitor for mold or decay. Do not consume any part that looks unhealthy.

FAQ

Can all herbs regrow in water?

Not all; soft-stemmed herbs like basil and mint regrow best, while woody herbs may root slowly or need soil.

How often should I change the water?

Every 3–4 days to keep it fresh and prevent bacterial growth.

Can I transplant water-grown herbs to soil?

Yes, once roots are 5–7 cm (2–3 inches), transplant carefully to soil.

Do herbs grown in water taste different?

They often taste fresher and more vibrant but may vary by species and growing conditions.

Is it necessary to use filtered water?

Filtered or tap water left to sit for a few hours is usually fine; avoid chlorinated water if possible.

Sources

• Wawstock - wawstock.com
• Royal Horticultural Society - rhs.org.uk
• University Extension Services - various