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PlantSnap
Plant Care
Monarch rosemallow
(Hibiscus radiatus)
Also Known As
Monarch rosemallow, Sunset hibiscus, Yellow hibiscus, Chinese hibiscus
About This Plant
Hibiscus radiatus is a flowering plant species that belongs to the Malvaceae family. It is a shrub or small tree that can grow up to 10 feet (3 meters) tall. The plant has large, showy flowers that can be red, pink, or white in color.
Plant Care Instructions
Outdoor Size Range
6-10 feet (1.8-3 meters)
Light Requirements
Hibiscus radiatus requires full sun to partial shade. It is best to place the plant in a location where it receives at least 6 hours of direct sunlight per day.
Humidity Needs
The plant prefers high humidity levels. It is recommended to use a humidifier or place the plant on a tray filled with pebbles and water to increase humidity levels.
Fertilizing Schedule
The plant requires regular fertilization during the growing season using a balanced fertilizer. It is recommended to use a fertilizer with a higher phosphorus content to promote blooming.
Pruning Guidelines
The plant requires regular pruning to maintain its shape and promote new growth. It is recommended to prune the plant in late winter or early spring before new growth appears.
Common Pests and Diseases
Common pests for Hibiscus radiatus include aphids, spider mites, mealybugs, and whiteflies. The plant is also susceptible to fungal diseases such as powdery mildew and rust.
Indoor Size Range
36-48 inches (91-122 cm)
Watering Schedule
The plant needs to be watered regularly, especially during the growing season. The soil should be kept moist but not waterlogged. It is important to avoid letting the soil dry out completely.
Temperature Range
Hibiscus radiatus thrives in warm temperatures between 60-90°F (16-32°C). It is important to protect the plant from frost and cold temperatures.
Growing Season
The growing season for Hibiscus radiatus is from spring to fall. The plant goes dormant during the winter months.
Growing Difficulty Level
Hibiscus radiatus is moderately difficult to grow. It requires specific growing conditions and regular maintenance to thrive.
USDA Hardiness Zones
Hibiscus radiatus is hardy in USDA zones 9-11.
Did You Know?
In traditional medicine, the roots and leaves of Hibiscus radiatus are used to treat various ailments such as fever, cough, and sore throat.
