Searsia erosa has delicate, airy foliage. It can be grown in the garden as a soft, screening plant or hedge and it is attractive enough to use as a focal point in gardens where it grows well. It can be replaced in the garden by S. tenuinervis, in areas where the latter grows.

Searsia erosa survives extremes of temperature and thrives in gardens where temperatures soar to 42ºC in summer and plunge to -10ºC in winter. It grows well on stony and gravel soil as these are well drained. Avoid waterlogged soils with poor drainage.

This species grows easily from seed, if fresh, unparasitized seed can be found. Before planting the seed, place it in water. Discard all seeds that float to the surface, as they will not germinate. Rub off all fleshy bits from the remaining seed and dry the seeds in a sunny place. Then plant them in a mixture of gravel, loam and river sand. Only lightly cover the seeds and keep them moist, but never too damp. Seeds should start germinating about 8 weeks after sowing. Prick them out into individual bags when they have 4 leaves. Once plants are 0.5 m high they are ready to be planted out in the garden.