Recently 3 of my rosemary bushes seems to have some (multiple) illness and/or pest.
I am an absolute amateur, so I just hopelessly see their day by day worsening condition. I know it is hard to diagnose by photo, I did my best when I was taking the pictures.
Could anyone identify what the problem(s) is/are, and most importantly what to do to cure?
Detailed plant and environment info:
Location is Budapest, Hungary, it's springtime now. All plants are in pots. There are two different plants on the photos, they are approx 4-5 years old, from the very same source. There is a 3rd plant from that source which has exactly the same symptoms. The plant in the second photo 1.5 years ago was cut back to approx 10 cm (no leaves at all), then grew a beautiful healthy 30 cm greenery until it now produces the symptoms. I have two other rosemaries 2 years old from an other source which seem to be completely healthy, despite of the fact they are literally between the sick plants.
I can use only absolutely harmeless chemicals and methods, as I have no appropriate protective gear, besides of this sometimes we use these plants in our recipes... and I am afraid of toxic and "toxic but safe to use if..." chemicals.