Getting it to bloom
Why won't my Crested Floating Heart bloom? (and how to make it flower)
Also called Crested Floating Heart, Variegated Water Snowflake, White Water Snowflake (Nymphoides cristata).
More about crested floating heart
About Crested Floating Heart
Nymphoides cristata · also called Crested Floating Heart, Variegated Water Snowflake · flowering
Crested Floating Heart is a tropical aquatic perennial from Southeast Asia bearing small, heart-shaped floating leaves (3–8 cm) with red-tinged margins and profuse, fragrant white star-shaped flowers with distinctively fringed petals from late spring through early autumn. Fast-growing and suited to tubs and small ponds. Classified as invasive in Florida and several US states — confirm legality before purchase.
Plant type: flowering
Watch for — 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.
The reasons crested floating heart isn't blooming
Almost every non-blooming crested floating heart traces back to one of these, roughly in order of how common they are:
- Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
- Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
- The plant has not been deadheaded, so it stops flowering once it sets seed.
- Irregular watering — drought or waterlogging at the budding stage makes buds abort.
- It is still too young or was checked by a transplant and is rebuilding before flowering.
Feeding crested floating heart a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
The fix — how to get crested floating heart to flower
- Maximise sun. Give crested floating heart the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
- Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
- Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
- Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.
Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for crested floating heart and get the feeding right with the crested floating heart fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.
Bloom season and what to expect
Crested Floating Heart flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.
Post-bloom care so it flowers again
Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.
For everything else this plant needs day to day, see the full crested floating heart care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Crested Floating Heart blooming — frequently asked questions
Why won't my crested floating heart flower?
Crested Floating Heart blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
How do I make crested floating heart bloom?
Give crested floating heart the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
When does crested floating heart normally bloom?
Crested Floating Heart flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.
What should I do with crested floating heart after it flowers?
Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.
What is the single biggest mistake stopping crested floating heart flowering?
Feeding crested floating heart a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Crested Floating Heart care — the full brief (light, water, humidity, problems, pet safety)
- Crested Floating Heart light needs — usually the first thing to fix for flowers
- Crested Floating Heart fertilising — the right feed for buds, not just leaves
- Should I water my plant? The simple check
- Why is my plant wilting? Wet vs dry
- Underwatered plant — signs and rehydration
- Why won't my peace lily bloom?
- Why won't my jade plant bloom?
- Why won't my tomato bloom?
- All 3229 bloom guides in the Growli library