Hibiscus tree is an annual or perennial herbaceous plant with trumpet-shaped flowers. This tropical tree grows in full sun or partial shade and does best in moist, well-drained soil. With over 200 species and many more cultivars in the genus, hibiscus flowers can reach nearly 10 inches in diameter at maturity and come in a wide range of colors from white to red, pink, yellow, and orange.
Tropical hibiscus varieties (Hibiscus rosa-sinensis) are perfect if you live in a warm climate or want an impressive houseplant. For those living in cooler parts of North America, opting for a hardy variety or the shrubby rose of Sharon (Hibiscus syriacus), which are both easier to grow and can withstand colder winter temperatures, will be the better choice. Regardless of variety, hibiscus flowers are very attractive to butterflies and hummingbirds.

While all hibiscus have similarities that go beyond appearance, they have some distinct care and growing requirements.
Hibiscus Care
The care you provide your hibiscus will vary depending on whether it is a hardy or tropical variety and whether it is grown indoors or outdoors.
Warning
You can grow most species of hibiscus without worrying about them getting out of control. However, rose of Sharon (Hibiscus syriacus) is classified as an invasive species in much of eastern North America.1
Light
Hibiscus love bright conditions. In northern climes, full sun is often best, but in the intense, dry heat of the south, filtered sunlight is better. If you find that your plant isn’t producing many blooms, move the plant to a sunnier location.
Indoor tropical hibiscus will need a bright spot near a sunny window but keep it away from strong, direct sunlight. If you are transferring your plants outdoors when the warmer weather arrives, gradually acclimate them to the brighter conditions.
Soil
All hibiscus do best in well-drained, fertile, moist, loamy soil. The hardy varieties are wetland natives and are a good choice for sites that are too wet for other plants.
Most hibiscus prefer a slightly acidic soil pH, but the rose of Sharon is tolerant of alkaline conditions. The color of hibiscus flowers can be affected by the soil acidity level.
Mulching around the plant base can help with moisture retention if your location is experiencing dry conditions. For nutrient-poor soil, amending with organic matter will be beneficial.
Water
All hibiscus are thirsty plants that need to be kept moist. Indoor tropical hibiscus benefit from regular watering from spring to early autumn during the growing season. Significantly reduce watering during dormant periods. For container-grown plants, ensure the top inch or so of potting mix dries out fully before watering—saturated soil is also problematic, and make sure containers have adequate drainage holes.
Depending on the conditions, you might need to water your hibiscus daily to help it produce an abundance of blooms.
If your hardy hibiscus are not planted near a pond or in another wet area, water them on a regular basis to keep them moist.
Temperature and Humidity
Rose of Sharon and hardy hibiscus can grow in cool, temperate climates. They thrive in temperatures from 60 to 90 degrees Fahrenheit but can handle temperatures as low as 20 degrees Fahrenheit. When temperatures drop below 30 degrees Fahrenheit and frost is a risk, bring container-grown plants indoors. However, be mindful of their higher humidity requirements—which is why bathrooms are a good location for these plants.
Temperatures below 50 degrees Fahrenheit can kill tropical varieties, so they are best housed in humid locations indoors in regions where this is likely to occur.
Fertilizer
To encourage abundant, healthy blooms with good color, feed plants with a high potassium and high nitrogen fertilizer. Fish emulsion and seaweed extract are organic fertilizers. Feed a half-strength solution just before the start of the bloom period and continue at least once every few weeks until the end of flowering.
Types of Hibiscus
There are hundreds of tropical and hardy hibiscus hybrids and cultivars available. Just a few popular varieties include:
Swamp Hibiscus (Hibiscus coccineus): An unusual, hardy species featuring large pinwheel-like flowers

Confederate Rose (Hibiscus mutabilis): This hardy rose mallow has large, showy flowers that open white and then change color.

Hibiscus rosa-sinensis ‘Cajun Cocktail’: A tropical cultivar with striking orange and yellow ruffled blooms, giving each one a one-of-a-kind appearance.

Hibiscus moscheutos ‘Perfect Storm’:A hardy, compact hybrid cultivar that blooms late in the season.
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