roots are almost certain to rot; but it will thrive well 
and flower abundantly if planted in a light sandy soil 
in a dry situation, or if it be cultivated in a pot. A 
mixture of turfy loam, peat, and sand, will suit it very 
well. It is also a desirable plant for ornamenting rock- 
work ; and may be increased by dividing the roots, or 
by seeds. 
Our drawing was taken from a fine strong plant, 
in the Apothecaries' Garden, Chelsea, last summer. 
