An initial consideration for almost any failure to thrive is soil quality and pH. Rhododendrons and azaleas prefer acidic soil. That’s another way of describing the pH, and pH can be checked with an inexpensive soil tester. A good nurseryman/woman or your local extensive service can help you with that, too.
Rhodos and azaleas also like organic material in the soil and organic mulches on top. Give the plants a good dose of aged manure in late fall (or not al all). See more advice above about the conditions that enable rhodos to bloom at their best.
An initial consideration for almost any failure to thrive is soil quality and pH. Rhododendrons and azaleas prefer acidic soil. That’s another way of describing the pH, and pH can be checked with an inexpensive soil tester. A good nurseryman/woman or your local extensive service can help you with that, too.
Rhodos and azaleas also like organic material in the soil and organic mulches on top. Give the plants a good dose of aged manure in late fall (or not al all). See more advice above about the conditions that enable rhodos to bloom at their best.
We hope this helps!