My azalea plant's new growth has brown tips on the leaves.
Brown Tips on New Azalea Growth
Certified GKH Gardening Expert
There is likely something wrong with the roots. Either the plant is not getting enough water or their is something damaging the roots. Increase water if you think that this may be the issue. If you think the water is adequate, try taking a look at the roots and see if you can see damage from either pests or disease.