Philadelphus ‘Minnesota Snowflake ... With a similar appearance, you can also purchase Miniature Snowflake Mock Orange at ...

I suspect named cultivars of mock orange such as Minnesota Snowflake, Glacier and Snow Dwarf will bloom better than the straight species, but I cant say for sure since I havent grown these.

There are quite a few distinct varieties of mock orange. The one last week was a variety called 'Virginal.' Yours is a double-flowered variety called 'Minnesota Snowflake.' ...