Darwinia squarrosa is a shrub with an erect and straggly habit, typically growing a height of. The fringed bracts around the flowers form a pendent "bell" which is usually red or pink. These are primarily produced between August and November in the species' native range.
The species requires good drainage and protection from direct sun. It is difficult to propagate from seed, but cuttings strike readily. Grafting on stocks of Darwinia citriodora may be carried out in areas with unsuitable growing conditions.