Sparganium subglobosum
Care, watering, light and tips for Sparganium subglobosum on Floravia.
Quick facts
- Family: Typhaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Sparganium subglobosum
Sparganium subglobosum, commonly known as burr-reed, is a perennial aquatic plant characterized by its long, narrow leaves and distinctive spherical, spiny flower heads, which give it its common name. It thrives in shallow waters along the edges of ponds, lakes, and slow-moving streams. It is ideal for wetland restoration projects or for adding a naturalistic touch to larger garden ponds.
Native range
East Asia, from Siberia to Japan and China.
Care tips
This plant thrives in full sun to partial shade and should be planted at the edge of water bodies or in permanently wet areas, with its rhizome submerged in no more than 30 cm (12 inches) of water. It does not require special substrates, adapting well to silty or clay soils rich in organic matter. A common mistake is attempting to grow it in pots without sufficient water or in soils that dry out, which is fatal to its aquatic development.
How to save a dying Sparganium subglobosum
- Warning signs
- Yellowish or brown, soft leaves, drooping stems. Indicates lack or excess of water.
- First aid
- Check water level. Ensure roots are always submerged, but without stagnant, oxygen-deprived water. Repot if substrate is decomposed.
- What kills it
- Complete drying of roots or oxygen-deprived waterlogging. Water contamination.
- Can it be saved?
- Yes, if roots are not completely rotted or dried. Act quickly.