description Sturt's Desert Pea Overview
Swainsona formosa, widely recognized as Sturt's desert pea, is a distinctive flowering plant in the Fabaceae family endemic to the arid interior regions of Australia. It grows as a low, trailing annual or short-lived perennial plant that spreads horizontally across the ground. The species is renowned for its striking, blood-red flowers, each featuring a prominent, glossy black bulbous structure, known as a boss, at the center of the petals. Officially designated as the floral emblem of South Australia in 1961, it is adapted to survive extreme desert heat and erratic rainfall.
insights Ranking position
Sturt's Desert Pea ranks #18 of 232 in the Flower ranking, behind Lily of the Valley, ahead of Peony.
help Sturt's Desert Pea FAQ
What is the black center on a Sturt's desert pea flower?
The glossy black structure is the flower's central boss, set against large scarlet petals. Some natural and cultivated forms have differently colored bosses or petals, but red and black is the iconic combination.
Why is Sturt's desert pea difficult to grow in a garden?
Swainsona formosa is adapted to arid environments and is highly susceptible to root rot in heavy or persistently wet soil. Growers often use very free-draining media or graft plants onto hardier Swainsona rootstock.
How did Sturt's desert pea become South Australia's floral emblem?
South Australia adopted Sturt's desert pea as its floral emblem in 1961. The plant is strongly associated with the state's dry inland landscapes and is protected in parts of Australia.
Who is Sturt's desert pea named after?
The common name honors explorer Charles Sturt, who recorded the plant during his travels in inland Australia. Its scientific name is Swainsona formosa, although older books may use Clianthus formosus.
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