'Colossus' flowers blooms steadily with attractive colossal 9-11" solid orange single flowers with a bright red eye and a hint of white rays. A strong bush with large, attractive leaves, it grows upright to six feet in the ground. It also grows well in containers and is somewhat heat- and sun-tolerant.. This medium sized tropical hibiscus is vigorous and blooms modestly over an extended period of time.
The glossy leaves of 'Colossus' are medium to dark green and oval to somewhat wedge-shaped. Its flowers are large, radial and flattened, and may curve gracefully backward, even rolling in hot weather.
Hibiscus is heat tolerant and prefers neutral to acidic, well-drained soil and full sun.
Being a fast growing plant, hibiscus prefer well drained rich soil and regular watering. Thoroughly water to moisten the entire root-ball each time you water. Allow the soil to become slightly dry between watering approximately to a depth of between 1/2" deep for small containers to 1" deep for large containers. Never keep the soil soggy. Avoid using a saucer or empty any excess water from it 30-40 minutes after watering.
Ideal for container plant or mixed border. Hibiscus plants are almost constantly visited by a variety of bees, butterflies, and hummingbirds.
Hibiscus plants love warm and humid conditions. Give the plant at least 6 hours of sunlight to see the lovely tropical blooms on it. They like to be a little root bound in a container, hence choose a container with only a little bit of room. Hibiscus in blooming stage needs daily watering.
Make sure your pot contains a drainage hole in it. In winters, cut down on the watering as too much water can kill it too. Only water it in winter when the soil gets dry.
Fertilise it in summers during the blooming period, once a week or once in 2 week.