Ian McNaughton at Macplants has developed a range of gentians which are more compact than the original Chinese wild species. One of the best is The Caley named after the society and at its best in October when Caley meetings start. Ian has also developed a white cultivar named Oban and two new ones likely to be available in 2016.
The photo below shows two plants of the Caley on the left, the new dark Troon in the back middle, two smaller plants of the new Tynebank Glory in the middle front and two Oban to the right. All grow well in acid soil or compost that is not allowed to dry out in summer.