Troubleshooting
Butomus umbellatus problems — and how to fix them
Butomus umbellatus (Butomus umbellatus) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Invasive in North America
Banned or listed as noxious across many US states and Canadian provinces. Grow only in a contained basket and never release it to natural water.
Few flowers
Poor flowering nearly always means too little sun or too deep planting. Move to full sun and into the shallow 5-15 cm zone.
Bulbil spread
Detaching bulbils float off and start new plants. Remove them and tidy spent growth to keep the clump contained.
Non-flowering 'triploid' clumps
Some forms are sterile and flower little, spreading only vegetatively. Source a known free-flowering, fertile stock if blooms are the goal.
Prevent butomus umbellatus problems before they start
Most butomus umbellatus issues are care-mismatch, not bad luck. Dial in the basics:
Looking for butomus umbellatus in general rather than its problems? Read the full butomus umbellatus care guide — light, water, soil and feeding.
Butomus umbellatus problems — FAQ
Why is my butomus umbellatus invasive in north america?
Banned or listed as noxious across many US states and Canadian provinces. Grow only in a contained basket and never release it to natural water.
Why is my butomus umbellatus few flowers?
Poor flowering nearly always means too little sun or too deep planting. Move to full sun and into the shallow 5-15 cm zone.
Why is my butomus umbellatus bulbil spread?
Detaching bulbils float off and start new plants. Remove them and tidy spent growth to keep the clump contained.
Why is my butomus umbellatus non-flowering 'triploid' clumps?
Some forms are sterile and flower little, spreading only vegetatively. Source a known free-flowering, fertile stock if blooms are the goal.