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PlantSnap
Plant Care
Thick-calyx hibiscus
(Hibiscus crassicalyx)
Also Known As
Thick-calyx hibiscus, Fat lilac hibiscus, Crassicalyx hibiscus, Tropical hibiscus
About This Plant
Hibiscus crassicalyx is a flowering plant species that is native to Borneo. It is a shrub that can grow up to 3 meters tall and has large, showy flowers that are typically pink or red in color.
Plant Care Instructions
Outdoor Size Range
6-10 feet (1.8-3 meters)
Light Requirements
Hibiscus crassicalyx requires full sun to thrive. It should be placed in a location that receives at least 6 hours of direct sunlight per day.
Humidity Needs
Hibiscus crassicalyx prefers moderate to high humidity levels. It can benefit from being misted regularly, especially in dry indoor environments.
Fertilizing Schedule
Hibiscus crassicalyx benefits from regular fertilization during the growing season. A balanced fertilizer with equal amounts of nitrogen, phosphorus, and potassium can be applied every 2-3 weeks.
Pruning Guidelines
Pruning can help to promote bushier growth and a more compact shape. Hibiscus crassicalyx can be pruned in early spring before new growth appears. Dead or damaged branches can be removed at any time.
Common Pests and Diseases
Common pests for Hibiscus crassicalyx include spider mites, whiteflies, and aphids. It is also susceptible to fungal diseases such as powdery mildew and rust.
Indoor Size Range
36-48 inches (91-122 cm)
Watering Schedule
The Borneo Rosemallow requires regular watering. The soil should be kept moist but not waterlogged. It is important to avoid letting the soil dry out completely between waterings.
Temperature Range
This plant species prefers warm temperatures between 60-85°F (15-29°C). It should be protected from frost and extreme cold.
Growing Season
The growing season for Hibiscus crassicalyx is from late spring to early fall.
Growing Difficulty Level
Hibiscus crassicalyx can be moderately difficult to grow. It requires specific growing conditions and regular care to thrive.
USDA Hardiness Zones
Hibiscus crassicalyx is hardy in USDA zones 9-11.
Did You Know?
In Borneo, the flowers of Hibiscus crassicalyx are used to make a traditional herbal tea that is believed to have medicinal properties.
