How to Care for Acorus calamus (Sweet Flag)

Korean name: 창포

Acorus calamus is an aquatic plant commonly found along water edges or wetlands, featuring long, broad linear leaves. Its flowers are small and inconspicuous, but the rhizomes emit a pleasant fragrance. It is easy to grow with consistently moist conditions.

Key facts

• Category: Aquatic plant
• Difficulty: Easy
• Where to keep: outdoors
• Native to: Eurasia
• Growth rate: Moderate
• Pets: Mildly toxic, so keep pets from chewing on it.
• Traits: aquatic plant, fragrant, beginner friendly, wetland
• Also known as: Sweet Flag, Calamus

Care Guide

• Light: Prefers partial shade to bright indirect light.
• Watering: Keep the soil consistently moist at all times.
• Soil: Prefers moist, well-drained soil.
• Humidity: Maintain high humidity levels.
• Temperature: 15~25°C
• Fertilizer: Apply diluted liquid fertilizer every two weeks during growing season.

Common questions

How often should you water Acorus calamus?

Keep the soil consistently moist at all times. Roughly every 3 days is the baseline; adjust for the season and the spot it sits in.

Where should you keep Acorus calamus?

It likes Prefers partial shade to bright indirect light.. You can grow it outdoors. Use Prefers moist, well-drained soil..

Is Acorus calamus safe around pets?

Mildly toxic, so keep pets from chewing on it.

Is Acorus calamus good for beginners?

Difficulty: Easy. It is forgiving enough for a first plant. Keep it around 15~25°C. Humidity: Maintain high humidity levels.. Fertilise Apply diluted liquid fertilizer every two weeks during growing season..