This mint is certainly powerfully minty, one whiff will clear the airwaves! With narrow leaves and pretty pale mauve/blue flowers from mid-summer. Can be a useful strewing herb around the house if you have rodent or spider problems, as both hate the smell of mint.
Grow in any position, keep the soil moist (it likes boggy areas) and trim back after flowering.
Single herb plant in a 15cm Italian terracotta pot, with a matching saucer. Planted in a peat-free compost mix with added vermiculite for extra drainage.