Potted Rosemary Turning Yellowish Pale

Question From: Tucson, Arizona, United States
Q: my potted rosemary is turning yellowish or pale..what is czuse and trreatment

A: Could be powdery mildew and /or plant is pot bound and may need repoting and fertilizing. If needles look like they are covered with powder, spray the plant with neem oil. Repot plant if potbound in container about 2 inches larger then old one, Fertilize with organic fertilizer diluted at half strength once a month in summer months. Best And Happy Yardening, Nancy