This is certainly the easiest growing member of the gentiana acaulis group, doing well in ordinary rich garden soils, tolerating lime easily, and in time forming large mats. The very large and magnificent deep blue trumpets are freely borne in May and June to the delight of our garden visitors.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.