Go to your profile page. click questions and you should find the question you asked.

Type your response below the comments on that age, and that way, those who answered will see your response.

It was Bamboo who answered your question. If you Google philadelphus you'll find lots of info on the characteristics of many different varieties, to save you making a similar mistake, if you can't find on already in flower. (I know this as I was looking at it only last week)