Darwinia fascicularis subsp. Darwinia fascicularis subsp. It forms a decumbent shrub rarely more than 50 cm high and spreads to 1 m in diameter. The branches will root readily when left in contact with the soil. The foliage is slightly less crowded and darker than the other subspecies.
Flowers are generally in clusters of four to six, but the colour is similar to the other subspecies.
Both forms require good drainage, and if planted in an exposed site, mulching to achieve a cool root run is beneficial. A general fertiliser applied in late winter and autumn will improve flowering. Both subspecies may be propagated by cuttings taken in early summer, but seed has been found to be difficult to germinate. It has been suggested that D. fascicularis subsp. Both forms have proved to be frost hardy and will grow in full sun to heavy shade, however, lack of good drainage has caused losses in less favoured sites.