Protea aurea subsp. aurea can be propagated from seed or from cuttings.

Seed Propagation: Collect seeds a year after the flower heads have dried on the plant to give the seeds time to mature. For best results, treat seeds with smoke water or a smoke primer to break dormancy, simulating the effects of fire in the natural habitat. Sow in autumn, in a well-drained fynbos mix consisting of 1 part loam, 1 part bark, and 2 parts sand and cover with seeds and cover the seeds lightly with sand or fine-milled bark. Germination typically takes 3–6 weeks. Avoid waterlogging by maintaining moderate moisture levels and place in an area with free air circulation. Seedlings are fast-growing and flowering can be expected from when they are one year old.

Cuttings: Take semi-hardwood cuttings, 60-100 mm long, during late summer from the current season’s growth. Dip the cuttings into a rooting hormone to enhance success rate and plant in a mixture of 50% polystyrene and 50% bark. Place the cuttings under intermittent mist with a bottom heat of 25°C and in a house with good air circulation. Rooting requires a mist unit or high humidity environment.

For optimal growth, this plant requires full sun and prefers acidic, sandy soil with good drainage. Once established, it is drought-tolerant but benefits from watering during extended dry periods. A well-ventilated environment and well-drained, undisturbed soil conditions are an essential factor in preventing disease in proteas. Fertilize with well-rotted compost added as a mulch or use low-doses of slow-release organic fertilizers and avoid over-fertilization, especially with phosphorus, as proteas are sensitive to it. Companion plants include other fynbos species like restios and ericas, which share similar water and soil requirements.