Hibiscus pedunculatus is an attractive, long-flowering garden subject which can be planted in groups using 3-5 plants together, or as an informal border. Planted to the middle or back of a mixed shrub or perennial bed, it shows itself off best, as its long slender branches allow the flowers to peep out from around and behind other shrubs, thus nicely concealing its sparse woody base from view. It can also be used as a container plant. It does best planted in full sun, but can also tolerate light shade quite well. It needs a moderate amount of water on a regular basis and should be kept well-watered during summer.

Hibiscus pedunculatus prefers moist, hot summers. In a cold, frosty garden, it might do well in a warmer, sheltered spot. It is a relatively fast-growing plant, provided it is planted in fertile, rich and well-drained soil. Enrich the soil with a considerable amount of compost and organic material. Prune the shrub lightly to hard, depending on how straggly it has become, towards the end of summer. It can also be pruned into a small standard.

The pink mallow can be propagated easily by way of herbaceous stem cuttings or from seed. Allow the seedheads to dry on the plants and remove them just before the capsules burst open dispersing the seed. Sow seed in a 1:1 mixture of fine bark and coarse river sand during the spring or early summer. Germination can take 2-5 weeks.

The most effective way to propagate this species is by doing it vegetatively. Take stem cuttings during spring or summer. Use a well-draining medium such as a 1:1 mixture of fine bark and polystyrene or plain coarse river sand. Place cuttings in a mist unit, where rooting of 90-100 % will occur in 2-3 weeks.