Thanks. I'll give this a try. I should have done that the first time, but it never entered my thoughts. I just figured "bigger pot, roots will spread OK".
I bought an upright Rosemary plant 3 weeks ago. It was probably 14 inches tall and crowded in the 6 inch pot. I repotted it in a 12 inch pot with OSH potting soil. Now some of the sprigs are turning gray and brown and drying out. What to do? Thanks for help