Holly bushes turning brown

Question

Leaves have a brownish color, how do I treat this.

Answer 1

Browning leaves indicate fungal infection or winter kill in most cases. Closely look at whether the browning starts with spots that enlarge and spread or the leaf overall turning brown in a uniform manner. If it is from winter kill, the leaves will fall and new ones emerge. https://www.gardeningknowhow.com/ornamental/shrubs/holly/leaf-scorching-in-holly.htm.
http://homeguides.sfgate.com/leaves-turning-brown-holly-bushes-50192.html

If you find spots, you are facing disease.