I have a client who has 4 hedge rows of Privet that are about 6 feet tall and 5 feet wide. One row is close to the road and obstructs the view of oncoming cars. The client would like these cut down to about 2 feet tall. The question I have is will these still bloom being the short. It seems to me that all that would be left would be the stalks of the Privet. My feeling is that this would be taking to much of the shrub and it would stress it. Can I successfully prune this back as much as 4 feet and still get future blooming. Thanks in advance.