Botanical name: Prostanthera sp.
Common name: Mint Bush
Cultivar: 'Poorinda Ballerina'
Family: Lamiaceae
Origin: Australia
USDA Plant Hardiness Zone Map
'Poorinda Ballerina' is an upright, evergreen shrub with dark-green, spiny leaves. The foliage is pleasantly perfumed. In late spring to early summer, it bears a profusion of pale-lilac, orchid-like flowers. It is hardier than many other mint bushes and prefers a moist, well drained position with some shelter from direct summer sun.
Similar plants: Prostanthera sp. 'Poorinda Ballerina' (Mint Bush)
Link to this plant:
https://toptropicals.com/catalog/uid/prostanthera_poorindaballerina.htm