pineapple sage w/ brown spots
i have a pineapple sage in a clay pot that looks pretty healthy except for one thing- most of the leaves have dry brown patches on them (at least one per leaf- but not on the new upper leaves). it gets about 6 hrs of sun per day, and i keep it watered. is this common, and what could be causing it? (i can post a pic if i need to.) thanks!