Rosemary is a tender perennial, so depending on your climate zone, it will not survive winter.
I have found it difficult to overwinter rosemary. It likes moist air but drier soil. I suspect it does not like forced air indoor heating that dries out the air. I have heard you can mist the plant periodically to provide the humidity it likes. Next year, I am going to try putting it in a shallow tray on top of some pebbles so it does not sit in the water, and keep water in the tray to add some humidity. You will still have to water it occasionally.
As back up, you can also take cuttings so if one dies, maybe you'll have a cutting or 2 that survives. Best do this early in the season with new growth than later in the season.
Rosemary is a tender perennial, so depending on your climate zone, it will not survive winter.
I have found it difficult to overwinter rosemary. It likes moist air but drier soil. I suspect it does not like forced air indoor heating that dries out the air. I have heard you can mist the plant periodically to provide the humidity it likes. Next year, I am going to try putting it in a shallow tray on top of some pebbles so it does not sit in the water, and keep water in the tray to add some humidity. You will still have to water it occasionally.
As back up, you can also take cuttings so if one dies, maybe you'll have a cutting or 2 that survives. Best do this early in the season with new growth than later in the season.