Troubleshooting
Nymphaea capensis problems — and how to fix them
Nymphaea capensis (Nymphaea capensis) 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.
Cold-water stall
Being tropical, it sulks and refuses to flower in cool water below about 20°C. Plant out only once the pond has warmed in early summer, or use a heated or conservatory pool.
Frost kills the crown
It is frost-tender and will not survive a freezing winter outdoors. Lift the tuber before frost and store it warm and barely moist, or overwinter the plant under glass.
Aphids and pad-eating pests
Lush tropical foliage attracts waterlily aphids and china-mark moth larvae. Hose aphids off for fish, and pick off rolled or mined leaves promptly.
All leaf, few flowers
Too little sun, too-cool water, or under-feeding suppresses its prolific blooming. Give maximum sun and warmth and feed regularly through summer.
Prevent nymphaea capensis problems before they start
Most nymphaea capensis issues are care-mismatch, not bad luck. Dial in the basics:
Looking for nymphaea capensis in general rather than its problems? Read the full nymphaea capensis care guide — light, water, soil and feeding.
Nymphaea capensis problems — FAQ
Why is my nymphaea capensis cold-water stall?
Being tropical, it sulks and refuses to flower in cool water below about 20°C. Plant out only once the pond has warmed in early summer, or use a heated or conservatory pool.
Why is my nymphaea capensis frost kills the crown?
It is frost-tender and will not survive a freezing winter outdoors. Lift the tuber before frost and store it warm and barely moist, or overwinter the plant under glass.
Why is my nymphaea capensis aphids and pad-eating pests?
Lush tropical foliage attracts waterlily aphids and china-mark moth larvae. Hose aphids off for fish, and pick off rolled or mined leaves promptly.
Why is my nymphaea capensis all leaf, few flowers?
Too little sun, too-cool water, or under-feeding suppresses its prolific blooming. Give maximum sun and warmth and feed regularly through summer.