Flowering occurs from July to September and the fruits which follow are oval to cone-shaped with a pointed end and 4–5 mm (0.16–0.20 in) long.

[2][3] The species was first formally described by Robert Chinnock in 2007 and the description was published in Eremophila and Allied Genera: A Monograph of the Plant Family Myoporaceae.

[5] Eremophila mirabilis occurs in two disjunct locations, one near Niagara and the other north of Mullewa[3] in the Murchison and Yalgoo biogeographic regions.

[3] This species is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[6] meaning that is poorly known and from only one or a few locations.

[7] The unusual flower colouring of this eremophila, with spots on the outside of the petal tube, and the long-lasting, large red or yellow sepals makes it a valuable addition to a garden or for a container plant on a patio.