Jordaaniella spongiosa flowers are pollinated by bees and monkey-beetles that revel among stamens and stigmas of the wide flower centres when those are open in the afternoons on hot days.

The fruit capsules have more than ten locules, the closing bodies smaller than in Leipoldtia that bears similar capsules. The capsules appear somewhat square on top, the valves bent (Frandsen, 2017; Cowling and Pierce, 1999).