what are remarkable points for growing roses at home?

Question

is there any official site available

Answer 1

American Rose Society gives points on buying healthy bushes that grow well in your area, pruning, dealing with diseases and pests.
http://www.ars.org/

All-America Rose Selections is an association of growers dedicated to the introduction and promotion of exceptional roses.
http://www.rose.org/

The Rosarian: An on-line magazine devoted to roses and the gardeners who cultivate them. Resources include discussion forum, a picture gallery, and links to rose gardens, dealers, etc.
http://www.rosarian.com/

World Federation of Rose Societies: An association of the national Rose Societies of 37 countries & provides links to its member nations individual web sites. Rose Hall of Fame of the world's favorite roses.
http://www.worldrose.org/

A site devoted to roses and all that is rose related, including selecting, buying, breeding, caring for and exhibiting:
http://www.helpmefind.com/rose/index.php

A specialist in old, new, and unusual roses:
http://www.heirloomroses.com/

Answer 2

David Austin is a Master Rose Garden and he has a good web site. www.davidaustinroses.com. Go under CHOOSING ROSES AND CULTIVATION and you will see everything you need to know. You can also request a catalog and see some of his beautiful roses. I have bought a few and they do very well. You won't get junk mail from his web site or no calls or other mail. Enjoy!