Hi Kirpal,
On the way from chandigarh to dehradun via Kala Aamb, after Nahan there is Nursary on the Left hand side. Its Name is "CHANDAN NURSARY". The owner of this nursary has planted 500 plants in his farm (3 Kms from this nursary). If you will request him, he will take you there to his farms where you can see 2 years of plants (4 to 7 feet high). I visited last on 11th feb 2018.