Propagation
Surface sow fresh seed during spring in a well-drained media, and maintain a temperature of 16º to 18º C. (61º to 64º F). Prick out and pot up when they are large enough to handle.

Cuttings of non-flowering shoots during late spring to early summer.

Botanic information
Leaf: The mid green leaves are broad-ovate to oval with a serrate to dentate margin and an obtuse apex. The petiole is up to 10mm (⅜in) long and the surface is covered in bristle-like hairs. The upper surface has darker veins giving it a marble-like appearance and the underside is pale green.

Flower: The flowers have pubescent pointed calyx lobes and the corolla is tubulate to campanulate with spreading lobes. It has 4-stamens with long slender arched filaments and the ovoid ovary is superior. They appear solitary in the leaf axils from late winter to summer. 

Fruit: The persistent calyx is attached to the tiny capsule and the seeds are viable but the plant may be reproduced vegetatively. The flowering and fruiting period may vary in tropical regions.