What other woody plants besides rhododendrons and azaleas need acidic soil?
Most plants tend to like a pH range of 6.2-6.8 (7 is neutral). But "acid-loving" plants tend to prefer a pH of about 5-6 or sometimes even lower. There are many plants besides rhododendrons and azaleas (which are all Rhododendrons anyway) that like acidic soil. Some to consider are camellias, mountain laurels, dogwoods and hollies.
For a full list, see Cornell Cooperative Extension's Woody Plants for Acid Soils.
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- Courtesy of NYBG Plant Information Service