Troubleshooting
Crested Floating Heart problems — and how to fix them
Crested Floating Heart (Nymphoides cristata) 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 spread / legal restrictions
This species spreads aggressively via stolons and viviparous plantlets and is classified as a noxious invasive weed in Florida, North Carolina, and other US states. It is illegal to purchase, sell, or grow it in some jurisdictions. Never release into natural waterways. Grow only in contained, closed tub gardens.
Leaf scorch in waterlogged dry spells
If water level drops and floating leaves are left stranded on mud or a sun-baked container edge, leaf margins brown rapidly. Maintain consistent water depth and check containers daily in hot weather.
Aphid and whitefly on emergent flowers
The flower stalks held above water can attract aphids and whitefly. Knock pests off with a strong jet of water directed away from the pond; avoid insecticides near open water as they are toxic to fish and aquatic invertebrates.
Prevent crested floating heart problems before they start
Most crested floating heart issues are care-mismatch, not bad luck. Dial in the basics:
Crested Floating Heart problems — FAQ
Why is my crested floating heart invasive spread / legal restrictions?
This species spreads aggressively via stolons and viviparous plantlets and is classified as a noxious invasive weed in Florida, North Carolina, and other US states. It is illegal to purchase, sell, or grow it in some jurisdictions. Never release into natural waterways. Grow only in contained, closed tub gardens.
Why is my crested floating heart leaf scorch in waterlogged dry spells?
If water level drops and floating leaves are left stranded on mud or a sun-baked container edge, leaf margins brown rapidly. Maintain consistent water depth and check containers daily in hot weather.
Why is my crested floating heart aphid and whitefly on emergent flowers?
The flower stalks held above water can attract aphids and whitefly. Knock pests off with a strong jet of water directed away from the pond; avoid insecticides near open water as they are toxic to fish and aquatic invertebrates.