This annual to short lived perennial has an upright to spreading straggly habit with purplish hairy stems. It has dark green lobed leaves and the creamy-yellow broad funnel-shape flowers appear singularly from summer to early autumn.

Hardiness zones 9 to 11 

Hibiscus trionum natural habitat is uncertain though it has naturalised in Australia, New Zealand and many Asian countries. 

It prefers a protected sunny position and grows in most well drained organic rich moist soils and is drought tolerant and some forms are frost tolerant, while others frost tender. 

The Bladder Ketmia is grown for its flowers and low rounded habit.  It is planted in small or native gardens as a specimen or used in rockeries. It is suitable for coastal and inland regions establishing in one season. It is also suitable for containers or used in roof gardens. This plant self sow's readily and may become weedy but is easily control. ID 3245

Hibiscus (hi-BIS-kus) trionum (try-OH-num)

Malvaceae (mal-VAY-see-ee)
Cotton, Mallows and Hollyhocks