Troubleshooting
Egyptian White Water Lily problems — and how to fix them
Egyptian White Water Lily (Nymphaea lotus) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Failure to bloom in cool water
N. lotus will not flower if water temperature drops below 21°C (70°F). In temperate climates, flowering is often delayed until midsummer; a dark-coloured pond liner helps absorb solar heat to warm the water.
Water lily aphid (Rhopalosiphum nymphaeae)
Colonies cluster on pads and buds, causing distorted growth and sooty mould. In garden ponds, dislodge colonies with a water spray and allow fish to feed on them; avoid chemical treatments in water features with fish.
Prevent egyptian white water lily problems before they start
Most egyptian white water lily issues are care-mismatch, not bad luck. Dial in the basics:
Egyptian White Water Lily problems — FAQ
Why is my egyptian white water lily failure to bloom in cool water?
N. lotus will not flower if water temperature drops below 21°C (70°F). In temperate climates, flowering is often delayed until midsummer; a dark-coloured pond liner helps absorb solar heat to warm the water.
Why is my egyptian white water lily water lily aphid (rhopalosiphum nymphaeae)?
Colonies cluster on pads and buds, causing distorted growth and sooty mould. In garden ponds, dislodge colonies with a water spray and allow fish to feed on them; avoid chemical treatments in water features with fish.