Correa decumbens is a prostrate to spreading shrub that typically grow to a height of 1 m (3 ft 3 in) with its branchlets covered with reddish brown hairs.

The corolla is narrow cylindrical, pink to red with four green lobes, 18–27 mm (0.71–1.06 in) long.

Flowering occurs between November and February as well from April to August in the species' native range.

[2][3][4] Correa decumbens was first formally described in 1855 by botanist Ferdinand von Mueller in Transactions and Proceedings of the Victorian Institute for the Advancement of Science from plants growing "on the cataracts towards Mount Lofty, and on the banks of the Onkaparinga in South Australia".

[5][6] Spreading correa occurs on the southern Mount Lofty Ranges where it grows in forest dominated by stringybark and on Kangaroo Island where it grows in forest dominated by sugar gum (Eucalyptus cladocalyx).