News regarding insulin leaves

Sir,
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
Jammu