I live in an area with a very hot summer, dry and mild winters. I bought a rosemary plant and it was good and then I started to dry and then I died.
Outside United States
Thank you for your question. You don't indicate where you live, or what care you gave the plant, so if you're wanting to know why it died, I really don't have enough information. I'm afraid the best I can do is point you to an Extension article on this plant's care, from one of our warmer states: https://agrilifeextension.tamu.edu/browse/featured-solutions/gardening-landscaping/rosemary/
Hope this is helpful.