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Chinese Hibiscus
Hibiscus rosa-sinensis
Care level: Moderate
Each spectacular Chinese Hibiscus flower typically lasts only a single day before wilting, opening fully at dawn and closing for good by evening, a fleeting show that the plant compensates for by producing a nearly continuous succession of new buds throughout the warm growing season, so a healthy plant is rarely without color.
Needs full sun to bright light for abundant flowering; too little light greatly reduces blooms.
Water
Keep soil evenly moist, watering when the top few centimeters dry, often every few days in summer.
Humidity
Prefers moderate to high humidity, especially during flowering.
Soil
Rich, well-draining potting mix with regular feeding for blooms.
Temperature
Protect it from frost and cold wind.
Size
1.2-3m tall and 1.5-2.4m wide in the ground; smaller in a container.
Growth speed
Medium
Best position
south-east / south / south-west-facing windowanywhere up to about 1 m from the window
east / west-facing windowright by the window
See every window directionHide window directions
Best position
right by the window
about 1 m
about 2 m
about 4 m
4 m or more
north
too dark○
too dark○
too dark○
too dark○
too dark○
north-east
too dark○
too dark○
too dark○
too dark○
too dark○
east
works well✓
too dark○
too dark○
too dark○
too dark○
south-east
works well✓
works well✓
too dark○
too dark○
too dark○
south
works well✓
works well✓
too dark○
too dark○
too dark○
south-west
works well✓
works well✓
too dark○
too dark○
too dark○
west
works well✓
too dark○
too dark○
too dark○
too dark○
north-west
too dark○
too dark○
too dark○
too dark○
too dark○
✓works well~just about○too dark☼too much direct sun
A rough guide based on window direction and typical daylight through the year. Window size, curtains and whatever stands outside matter just as much.
?Pet safety not confirmed
As a precaution, keep it out of reach of children and pets.
Common mistake
It's easy to assume a hibiscus that drops flower buds before they open is diseased, but bud drop in this species is most often caused by inconsistent watering, sudden temperature swings, or moving the plant, keeping conditions steady solves it far more often than any pest or fungal treatment does.
Care by Season
Spring
Resume regular watering and start feeding every 2-4 weeks as new growth and buds appear.
Summer
Water frequently, feed regularly, and provide as much sun as possible for continuous blooming.
Autumn
Reduce feeding and ease off watering as flowering slows.
Winter
Water sparingly, stop fertilizing, and keep in a bright spot away from cold drafts.
Growing & Maintenance
Soil and pot
A rich, moist, well-drained potting mix in a large container.
Fertilising
Feed every 2-4 weeks from spring, when new growth and buds appear, through summer. Stop in winter.
Pruning
Cut it back by about half in early spring. It flowers on new growth, so pruning brings more blooms.
Propagation
From stem cuttings.
Pests & Diseases
Common problems
Flower buds dropping before they open
Most likely cause: Stress: uneven watering or a sudden change in light, temperature or position.
What to do: Water evenly and leave the plant where it is while it is in bud.
Leaves and buds dropping after a move
Most likely cause: The plant reacts to being moved.
What to do: Choose its position and keep it there. It settles within a few weeks.
Few flowers
Most likely cause: Too little light.
What to do: Give it full sun or the brightest light you have.
Long, bare stems
Most likely cause: No pruning.
What to do: Cut it back by about half in early spring.
Each flower lasts a single day
Most likely cause: Normal for this species.
What to do: Nothing to do. A healthy plant keeps opening new buds.
Pests & Diseases
Aphids
Signs: Clusters of small insects on buds and new growth
Treatment: Rinse with water and apply insecticidal soap to affected areas.
Whiteflies
Signs: Tiny white flying insects that scatter from leaf undersides when disturbed
Treatment: Use yellow sticky traps and treat with insecticidal soap regularly.
Spider mites
Signs: Fine webbing and stippled, dull leaves in dry conditions
Treatment: Increase humidity, rinse foliage, and apply insecticidal soap if needed. Check the undersides of the leaves and the crevices where the leaf stem meets the main stalk.
FAQ
Why do my Chinese Hibiscus flowers only last one day?
This is completely normal biology for the species, each bloom is genetically programmed to open and close within about 24 hours; a healthy, well-fed plant in good light simply produces a steady stream of new buds to replace them.
Why is my Chinese Hibiscus dropping flower buds before they open?
Bud drop is usually a stress response to inconsistent watering, a sudden change in light or location, or a temperature swing, rather than a pest issue, keeping the watering schedule and placement stable typically resolves it within a few weeks.
How often should I water a Chinese Hibiscus?
Whenever the top few centimetres of compost have dried, which is often every few days in summer. Keep it evenly moist and water sparingly in winter.
When and how should I prune a Chinese Hibiscus?
In early spring, by about half. The plant flowers on new growth, so a hard spring prune gives a bushier plant with more flowers.
How do I propagate a Chinese Hibiscus?
From stem cuttings taken from healthy, non-flowering shoots.
Can a Chinese Hibiscus stay outside?
Only while there is no risk of frost. Put it outdoors in a sunny spot sheltered from wind in summer and bring it in before the first frost.
