In their magnificent book The Flora of the Silk Road, Christopher and Basak Gardner (See ref.) write of the conditions these plants occupy in the wild: 'Central Asia is the best place in the world to see these striking flowers'. They go on to provide more detail: '… high above the meadows of the Aksu-Dzabagly in southern Kazakhstan during June...in their thousands on stony slopes'. And again: ...truly abundant on areas of slatey rocks from the ancient Karatau Mountains...'
Hardly a description of conditions in a Daventry garden.
'Flora of the Silk Road' available from good booksellers (and therefore
ruling out W.H.Smith). A wonderful read.
Last year we had three flower spikes but this year there are six. Our
garden at Stefen Hill, Daventry. 22 June, 2019