Are Privet Clippings Acid?

[Eco-Chic]

I shall have the pleasure of trimming my privet hedge (and that of the neighbours each side) very soon and wondered whether I could mulch my blueberries and cranberries with the shredded clippings?

[onlinecop]

Pruning or hedge chippings can be used as mulch if shredded and composted well. Fresh conifer clippings can contain plants mulch toxins, and must be composted first for at least 6 weeks to avoid leaching of chemicals such as tannins out of the woody material which can harm plants.
Pine needles: These can be used around acid-loving plants such as rhododendrons and camellias