Why lilacs turn brown prematurely?

Answer 1

Lilacs may turn brown prematurely due to various factors, including environmental stress, such as drought or extreme temperatures, which can hinder their ability to absorb water. Fungal diseases, like powdery mildew or bacterial blight, can also cause browning by damaging the leaves. Additionally, nutrient deficiencies, particularly a lack of nitrogen, or over-fertilization can negatively impact their health, leading to discoloration. Proper care, including adequate watering and disease management, is essential for maintaining healthy lilacs.