National Cactus, Succulent Botanical Gardens And Research Center , Sector 5, Panchkula, Haryana. Development of this garden started in July 1987 cacti and most of the succulents are endangered species and this is an effort to conserve these planst for posteriy. There are more than 3500 species of cacti and succulents in our collections and the number is steadily growing. This garden prides in having the largest collection of Indian succullents in the world some of the India plants are on the verge of extinction.