A little, aromatic plant – mint scented – that enjoys full sun and a calcareous substrate – perfect for the rockery! A sunny place should be prepared, moist at least at times (with excellent drainage); in the wild habitat often grows together with Primula mistassinica and Viola nephrophylla.
The flowers are very large compared to the size of the plant, purple to lavender or sometimes whitish, and appear in mid-summer, atop thin stems with linear leaves. It spreads by stolons and can be used as a light groundcover.
Germination: sown in the fall or spring (after 2-3 months cold-moist stratification).