Yellow bladderwort (Utricularia australis)
Care, watering, light and tips for Yellow bladderwort on Floravia.
Quick facts
- Family: Lentibulariaceae
- Difficulty: Demanding
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Yellow bladderwort
Utricularia australis, also known as 'vrangblærerot' or bladderwort, is a rootless, free-floating aquatic carnivorous plant native to Europe, Asia, and Australia. It is characterized by its delicate, filiform leaves and small bladder-like traps used to capture tiny aquatic organisms. It is ideal for ponds, aquariums, or water features where you want to add a touch of biodiversity and unique botanical interest.
Native range
Europe, Asia, Africa, and Australia
Care tips
This plant thrives in calm, sunny to partially sunny waters, with direct sunlight exposure that encourages the growth of microscopic algae, which it also feeds on. Keep the water clean and chlorine-free, preferably using rainwater or distilled water, and avoid any type of fertilizer, as the plant obtains its nutrients from captured insects. A common mistake is attempting to plant it in substrate; as a free-floating plant, it does not require rooting, and substrate can cause it to rot.
How to save a dying Yellow bladderwort
- Warning signs
- Submerged stems and traps become translucent and soft, reduced buoyancy, no flowering.
- First aid
- Ensure very pure water (distilled/RO), stable temperature (18-25°C), and bright indirect light. Check pH (6.0-7.0).
- What kills it
- Mineralized or chlorinated water, insufficient light, extreme temperature fluctuations, organic contamination.
- Can it be saved?
- Yes, if you act quickly. A few green sections can regrow under ideal conditions.