News regarding insulin leaves

This refers to the very important and informative article ‘Insulin leaves’ by Ashok Gupta,  DE Oct. 2017 dated 01/10/2017 I would be highly grateful if the author informs us specifically from which nursery or branch of Horticulture Deptt we can buy this plant in Jammu.
Yours etc…
Bharat Bhushan Parimoo