How much sun does it need?

Hibiscus rosa-sinensis thrives in full sun, needing at least 6 hours of direct sunlight daily for best flowering.

What kind of soil is best?

It prefers well-draining, slightly acidic to neutral soil. Rich, loamy soil is ideal.

How often should I water it?

Water regularly, keeping the soil consistently moist but not waterlogged, especially during the growing season.

Can it survive in cold weather?

No, it's a tropical plant and cannot tolerate frost. It needs to be brought indoors or protected in cooler climates.

When should I fertilize?

Feed with a balanced liquid fertilizer every 2 to 4 weeks during the spring and summer growing season.

Guide botanique

Hibiscus.

Hibiscus rosa-sinensis

Prononciation hi-BIS-kus ROH-suh SIN-en-sis

Aussi appelée China-rose, Chinese Hibiscus, Hawaiian hibiscus, Hibiscus, Shoeblackplant

Hibiscus rosa-sinensis — Photo de Jhonatan Matheus (CC BY) via gbif

The Chinese hibiscus is a tropical flowering shrub known for its large, showy blooms. It's a popular choice for adding a splash of vibrant color to gardens and patios in warmer climates. This plant thrives in sunny locations and brings a tropical feel wherever it's grown.

En un coup d'œil

Care level: Moderate
Plant type: Flowering shrub
Light: Full sun to partial shade
Indoor light: bright-indirect
Water: Every 2 to 7 days
Mature size: 6 to 10 feet tall and 3 to 6 feet wide
Growth rate: fast
Hardiness: USDA 9 to 12
Bloom time: Spring through fall

Entretien

Provide plenty of sunlight and consistent moisture, but avoid waterlogged soil. Watch for common pests like aphids and spider mites, and prune to maintain shape and encourage blooming. Fertilize regularly during the growing season for best flower production.

Watering: Water thoroughly when the top inch of soil feels dry, reducing frequency in cooler weather.
Feeding: Use a balanced liquid fertilizer every two weeks during the growing season.
Pruning: Prune in late winter or early spring to shape the plant and remove dead or overgrown branches.
Repotting: Repot every 1 to 2 years in spring when the plant becomes root-bound.
Soil: Well-draining, fertile loam
Soil pH: Slightly acidic to neutral (6.0 to 7.0)
Temperature: 18 to 30°C
Humidity: 50 to 70%
Drought tolerance: moderate
Lifespan: Perennial, can live for many years with proper care.
Deer and rabbits: low

Signes qu'il faut rempoter

Roots growing out of the drainage holes.
Water drains very slowly or not at all.
Plant dries out much faster than usual.
Visible salt or mineral buildup on the soil surface.

Sécurité

People: This plant is generally considered non-toxic to humans, though consuming large quantities may cause mild gastrointestinal distress.
Pets: Non-toxic to cats and dogs.
Children: No specific safety concerns for children beyond general caution with plants.
Contact allergens: No significant contact allergens are typically associated with this plant.
Airborne allergens: Pollen may cause mild respiratory irritation in sensitive individuals.
Edibility: The flowers are technically edible, but they are not typically consumed and may cause mild stomach upset in some individuals.

Comment l'identifier

Large, trumpet-shaped flowers
Five or more petals
Glossy, dark green leaves
Toothed leaf margins
Shrub or small tree form

Height: 1.8 to 3m
Spread: 0.9 to 1.8m
Leaves: dark green, evergreen
Flowers: red, pink, orange, yellow, white, 10 to 15cm

Problèmes courants

Aphids — Small, pear-shaped insects that feed on plant sap, causing yellowing and distorted growth.
Spider Mites — Tiny arachnids that create fine webbing and cause stippling on leaves due to their feeding.
Yellowing Leaves — Can be caused by overwatering, underwatering, nutrient deficiencies, or poor drainage.
Bud Drop — Flower buds may fall off due to environmental stress like sudden temperature changes or inconsistent watering.

La cultiver

Propagation: cuttings, seed
When to plant: spring, summer
Overwintering: In cooler climates, bring potted plants indoors before the first frost. Place in a bright location, reduce watering, and stop fertilizing. Check regularly for pests. Gradually reintroduce to outdoor conditions in spring after all danger of frost has passed.
In containers: Grows very well in containers, needing at least a 10-gallon pot for mature plants to encourage good root development and flowering.

Stem Cuttings

Take 6-8 inch cuttings from healthy, non-flowering stems in spring or summer.
Remove lower leaves, leaving only the top few.
Dip the cut end in rooting hormone.
Insert the cutting into a moist, well-draining potting mix.
Keep humid and warm, and roots should form in 4-8 weeks.

Seed

Sow seeds indoors in early spring, about 6-8 weeks before the last frost.
Use a sterile seed-starting mix and sow seeds about 1/4 inch deep.
Keep the soil consistently moist and warm (70-75°F).
Germination can be slow and erratic, taking 1 to 3 months.
Transplant seedlings into pots once they have several true leaves.

Plant hibiscus with other sun-loving tropicals that have similar water needs for a cohesive and thriving display.

Bonnes associations

Lantana — Lantana shares similar sun and heat requirements and can provide a colorful contrast.
Bougainvillea — Bougainvillea also loves full sun and heat, and its vibrant bracts complement hibiscus blooms.
Plumbago — Plumbago offers a lovely blue contrast and thrives in similar warm, sunny conditions.

À éloigner de

Mealybugs — Mealybugs can infest hibiscus, sucking sap and weakening the plant, and are difficult to eradicate.
Whiteflies — These tiny pests can swarm hibiscus, causing yellowing leaves and sticky honeydew buildup.

Espèces similaires

Confederate Rose — This species also has large, showy flowers that change color, but it is more cold-hardy and blooms in fall.
Rose of Sharon — A much hardier hibiscus species, it offers similar large flowers but is deciduous and tolerates cooler climates.

Science

Family: Malvaceae
Genus: Hibiscus
Order: Malvales
Class: Magnoliopsida
Native range: Southeast Asia and Pacific Islands.
Conservation: Not of conservation concern.

In its native tropical and subtropical habitats, it grows as an understory shrub in forests and along stream banks, benefiting from consistent moisture and warmth.

Value to wildlife: nectar source
Pollinators: hummingbirds, butterflies, moths
Uses: Ornamental, Cut flowers, Hedges

Au fil des saisons

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Flowering

Fruiting

Foliage

Repères écologiques

Salinity: 2/9
Soil reaction: 6/9
Light: 8/9
Temperature: 9/9
Moisture: 7/9
Nutrients: 7/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How much sun does it need?: Hibiscus rosa-sinensis thrives in full sun, needing at least 6 hours of direct sunlight daily for best flowering.
What kind of soil is best?: It prefers well-draining, slightly acidic to neutral soil. Rich, loamy soil is ideal.
How often should I water it?: Water regularly, keeping the soil consistently moist but not waterlogged, especially during the growing season.
Can it survive in cold weather?: No, it's a tropical plant and cannot tolerate frost. It needs to be brought indoors or protected in cooler climates.
When should I fertilize?: Feed with a balanced liquid fertilizer every 2 to 4 weeks during the spring and summer growing season.

D'où vient le nom

The genus name 'Hibiscus' comes from the Greek word 'hibiskos', referring to the mallow family. 'Rosa-sinensis' literally means 'rose of China'.

Bon à savoir

It's the national flower of Malaysia.
The flowers can be used to make a natural dye.
Some varieties have flowers that change color as they age.
It's a popular plant for bonsai cultivation.

Ton hibiscus a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

Télécharger l'appli

Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.