Giant horsetail (Equisetum giganteum)
Care, watering, light and tips for Giant horsetail on Floravia.
Quick facts
- Family: Equisetaceae
- Difficulty: Moderate care
- Watering: every 2 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Giant horsetail
Equisetum giganteum, commonly known as Southern Giant Horsetail, is a perennial plant with a prehistoric appearance, characterized by its bright green, hollow, and segmented stems that can reach impressive heights of up to 5 meters. It is ideal for ponds, stream banks, or wet garden areas, where its vertical structure creates an architectural and exotic focal point. Its vigorous growth makes it perfect for creating natural screens or adding a dramatic touch to aquatic landscapes.
Native range
North and South America (from southeastern Alaska to Chile and Argentina)
Care tips
This species thrives in full sun to partial shade and requires constant moisture, making it ideal for boggy soils or even submerged in shallow water. The substrate should be rich in organic matter and well-draining, although it tolerates a wide range of soils if moisture is maintained. A common mistake to avoid is allowing the substrate to dry out completely, as this can stress the plant and halt its growth. It's important to contain its spread if you don't want it to become too invasive, as it can be quite vigorous under ideal conditions.
How to save a dying Giant horsetail
- Warning signs
- Yellowish/brown, soft or dry stems; stunted growth. Indicates lack or excess of water.
- First aid
- Check substrate moisture. Cut damaged stems. Ensure good drainage and fresh water.
- What kills it
- Complete substrate drying or constant waterlogging without drainage. They are riparian plants.
- Can it be saved?
- Yes, if healthy rhizomes remain. With proper care and moisture, it will regrow vigorously.